Update data-templates.md

Fix anchor to `#call-the-functions-with-a-url`

content/en/templates/data-templates.md

@@ -217,7 +217,7 @@ Currently, you can only use those authentication methods that can be put into an
 
 To load local files with `getJSON` and `getCSV`, the source files must reside within Hugo's working directory. The file extension does not matter, but the content does.
 
-It applies the same output logic as above in [Calling the Functions with a URL](#calling-the-functions-with-a-url).
+It applies the same output logic as above in [Call the Functions with a URL](#call-the-functions-with-a-url).
 
 {{% note %}}
 The local CSV files to be loaded using `getCSV` must be located **outside** of the `data` directory.