Fix documentation link to zenodo

doc/intro.rst

@@ -84,7 +84,7 @@ Citing eXSpy
 
 If eXSpy has been significant to a project that leads to an academic
 publication, please acknowledge that fact by citing it. The DOI in the
-badge below is the `Concept DOI <https://help.zenodo.org/faq/#versioning>`_ of
+badge below is the `Concept DOI <https://support.zenodo.org/help/en-gb/1-upload-deposit/97-what-is-doi-versioning>`_ of
 eXSpy. It can be used to cite the project without referring to a specific
 version. If you are citing eXSpy because you have used it to process data,
 please use the DOI of the specific version that you have employed. You can