[docs] add a warning about https://

Gauvain Pocentek · Gauvain Pocentek · commit 042b70623881 · 2018-09-05T18:04:20.000+02:00
http to https redirection cause problems. Make notes of this in the
docs.
diff --git a/docs/api-usage.rst b/docs/api-usage.rst
@@ -43,6 +43,11 @@ You can also use configuration files to create ``gitlab.Gitlab`` objects:
 See the :ref:`cli_configuration` section for more information about
 configuration files.
 
+.. warning::
+
+   If the GitLab server you are using redirects requests from http to https,
+   make sure to use the ``https://`` protocol in the URL definition.
+
 Note on password authentication
 -------------------------------
 
diff --git a/docs/cli.rst b/docs/cli.rst
@@ -78,6 +78,11 @@ parameters. You can override the values in each GitLab server section.
 
 You must define the ``url`` in each GitLab server section.
 
+.. warning::
+
+   If the GitLab server you are using redirects requests from http to https,
+   make sure to use the ``https://`` protocol in the ``url`` definition.
+
 Only one of ``private_token`` or ``oauth_token`` should be defined. If neither
 are defined an anonymous request will be sent to the Gitlab server, with very
 limited permissions.
