Update OpenTargets link on Acknowledgements page

[twalsh-ebi]

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Description

This PR would update the OpenTargets link on the Ensembl Acknowledgements page.

Views affected

This change affects the Ensembl Acknowledgements page.

Example: sandbox vs June 2026 archive

Possible complications

None expected

Merge conflicts

None detected

Related JIRA Issues (EBI developers only)

N/A