Remove the external link icon from the Gmsh tutorial links

Author: nikoscham

tutorials/heat-conduction-2d-fin-gmsh.html

@@ -195,19 +195,7 @@ <h1>Heat Conduction in a 2D Fin Tutorial <span class="accent">(Gmsh Mesh)</span>
             <div class="highlight-container">
               <p>
                 This page demonstrates solving the 2D heat conduction fin problem using a Gmsh-generated mesh.
-                <a href="https://gmsh.info/">
-                  Gmsh
-                  <img
-                    src="https://upload.wikimedia.org/wikipedia/commons/4/44/Icon_External_Link.svg"
-                    alt="External Link Icon"
-                    style="
-                      width: 16px;
-                      height: 16px;
-                      vertical-align: middle;
-                      margin-left: 2px;
-                      margin-bottom: 4px;
-                    "
-                /></a>
+                <a href="https://gmsh.info/">Gmsh</a>
                 is a powerful mesh generation tool that can create complex geometries and meshes for finite
                 element analysis. For the mathematical formulation and theory, see the
                 <a href="heat-conduction-2d-fin.html">basic tutorial</a>.

tutorials/heat-conduction-2d-rhom-fin-gmsh.html

@@ -198,19 +198,7 @@ <h1>Heat Conduction in a 2D Rhomboid Fin Tutorial <span class="accent">(Gmsh Mes
                 It is a variation of the
                 <a href="heat-conduction-2d-fin-gmsh.html">rectangular fin tutorial</a>, but applied to a
                 rhomboidal domain.
-                <a href="https://gmsh.info/">
-                  Gmsh
-                  <img
-                    src="https://upload.wikimedia.org/wikipedia/commons/4/44/Icon_External_Link.svg"
-                    alt="External Link Icon"
-                    style="
-                      width: 16px;
-                      height: 16px;
-                      vertical-align: middle;
-                      margin-left: 2px;
-                      margin-bottom: 4px;
-                    "
-                /></a>
+                <a href="https://gmsh.info/">Gmsh</a>
                 is a powerful mesh generation tool that can create complex geometries and meshes for finite
                 element analysis. For the mathematical formulation and theory, see the
                 <a href="heat-conduction-2d-fin.html">basic tutorial</a>.