Merge branch '69-add-back-links-to-readmes' into 'develop'

Add back-link and separate note from description

See merge request !77

data_repo_renderer/__init__.py

@@ -366,13 +366,19 @@ class ReadmeRenderer(Renderer):
         """\
         # {{repo_name}}
 
-        {{repo_description}}
-
         **Note:**  *This dataset is just a mirror of an external source.
         Please make sure to properly credit the original creators of the data
         set just as you would do if you'd obtained the data directly from
         them.*
 
+        To learn more about how to use and access the data, check the central
+        documentation: <https://git.geomar.de/data/docs/>
+
+        -----
+
+        {{repo_description}}
+
+
         {{maybe_acknowledgements}}
         {{maybe_citations}}