Merge topic 'ExternalData-doc-typo'

1ad991a13e Help: correct typo in ExternalData (duplicate "of")

Acked-by: Kitware Robot <[email protected]>
Merge-request: !5196

Modules/ExternalData.cmake

@@ -179,7 +179,7 @@ calling any of the functions provided by this module.
 
 .. variable:: ExternalData_URL_TEMPLATES
 
-  The ``ExternalData_URL_TEMPLATES`` may be set to provide a list of
+  The ``ExternalData_URL_TEMPLATES`` may be set to provide a list
   of URL templates using the placeholders ``%(algo)`` and ``%(hash)``
   in each template.  Data fetch rules try each URL template in order
   by substituting the hash algorithm name for ``%(algo)`` and the hash