fix copy error: "Atom schema" -> "Volatile schemas"

[shaunlebron]

In #460, I copied the Atom tests and didn't rename the comment to Volatile

[kowinkhaing200-hue]

xs:choice
<xs:element ref="xs:minExclusive"/>
<xs:element ref="xs:minInclusive"/>
<xs:element ref="xs:maxExclusive"/>
<xs:element ref="xs:maxInclusive"/>
<xs:element ref="xs:totalDigits"/>
<xs:element ref="xs:fractionDigits"/>
<xs:element ref="xs:length"/>
<xs:element ref="xs:minLength"/>
<xs:element ref="xs:maxLength"/>
<xs:element ref="xs:enumeration"/>
<xs:element ref="xs:whiteSpace"/>
<xs:element ref="xs:pattern"/>
</xs:choice>
</xs:group>
<xs:group name="simpleRestrictionModel">
xs:sequence
<xs:element name="simpleType" type="xs:localSimpleType" minOccurs="0"/>
<xs:group ref="xs:facets" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:group>
<xs:element name="restriction" id="restriction">
xs:complexType
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-restriction"> base attribute and simpleType child are mutually exclusive, but one or other is required </xs:documentation>
</xs:annotation>
xs:complexContent
<xs:extension base="xs:annotated">
<xs:group ref="xs:simpleRestrictionModel"/>
<xs:attribute name="base" type="xs:QName" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="list" id="list">
xs:complexType
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-list"> itemType attribute and simpleType child are mutually exclusive, but one or other is required </xs:documentation>
</xs:annotation>
xs:complexContent
<xs:extension base="xs:annotated">
xs:sequence
<xs:element name="simpleType" type="xs:localSimpleType" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="itemType" type="xs:QName" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="union" id="union">
xs:complexType
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-union"> memberTypes attribute must be non-empty or there must be at least one simpleType child </xs:documentation>
</xs:annotation>
xs:complexContent
<xs:extension base="xs:annotated">
xs:sequence
<xs:element name="simpleType" type="xs:localSimpleType" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="memberTypes" use="optional">
xs:simpleType
<xs:list itemType="xs:QName"/>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:complexType name="facet">
xs:complexContent
<xs:extension base="xs:annotated">
<xs:attribute name="value" use="required"/>
<xs:attribute name="fixed" type="xs:boolean" use="optional" default="false"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="noFixedFacet">
xs:complexContent
<xs:restriction base="xs:facet">
xs:sequence
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="fixed" use="prohibited"/>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element name="minExclusive" id="minExclusive" type="xs:facet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-minExclusive"/>
</xs:annotation>
</xs:element>
<xs:element name="minInclusive" id="minInclusive" type="xs:facet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-minInclusive"/>
</xs:annotation>
</xs:element>
<xs:element name="maxExclusive" id="maxExclusive" type="xs:facet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-maxExclusive"/>
</xs:annotation>
</xs:element>
<xs:element name="maxInclusive" id="maxInclusive" type="xs:facet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-maxInclusive"/>
</xs:annotation>
</xs:element>
<xs:complexType name="numFacet">
xs:complexContent
<xs:restriction base="xs:facet">
xs:sequence
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="value" type="xs:nonNegativeInteger" use="required"/>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
<xs:element name="totalDigits" id="totalDigits">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-totalDigits"/>
</xs:annotation>
xs:complexType
xs:complexContent
<xs:restriction base="xs:numFacet">
xs:sequence
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="value" type="xs:positiveInteger" use="required"/>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="fractionDigits" id="fractionDigits" type="xs:numFacet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-fractionDigits"/>
</xs:annotation>
</xs:element>
<xs:element name="length" id="length" type="xs:numFacet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-length"/>
</xs:annotation>
</xs:element>
<xs:element name="minLength" id="minLength" type="xs:numFacet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-minLength"/>
</xs:annotation>
</xs:element>
<xs:element name="maxLength" id="maxLength" type="xs:numFacet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-maxLength"/>
</xs:annotation>
</xs:element>
<xs:element name="enumeration" id="enumeration" type="xs:noFixedFacet">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-enumeration"/>
</xs:annotation>
</xs:element>
<xs:element name="whiteSpace" id="whiteSpace">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-whiteSpace"/>
</xs:annotation>
xs:complexType
xs:complexContent
<xs:restriction base="xs:facet">
xs:sequence
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="value" use="required">
xs:simpleType
<xs:restriction base="xs:NMTOKEN">
<xs:enumeration value="preserve"/>
<xs:enumeration value="replace"/>
<xs:enumeration value="collapse"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:element name="pattern" id="pattern">
xs:annotation
<xs:documentation source="http://www.w3.org/TR/xmlschema-2/#element-pattern"/>
</xs:annotation>
xs:complexType
xs:complexContent
<xs:restriction base="xs:noFixedFacet">
xs:sequence
<xs:element ref="xs:annotation" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="value" type="xs:string" use="required"/>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>
</xs:element>
</xs:schema>