Add a section for contributing to the contributing docs (this page).

Author: Ivorforce

documentation/contributing_to_the_contributing_docs.rst

@@ -0,0 +1,64 @@
+.. _doc_updating_the_contributing_docs:
+
+Contributing to the contributing docs
+=====================================
+
+The contributing documentation documents how people can best contribute
+to Godot. It is the website you are looking at right now!
+
+As an important part of Godot, we'd like to see this documentation evolve
+and improve alongside the rest of Godot. Community involvement is just as
+welcome on this site as in the rest of Godot's documentation!
+
+If you'd like to submit an idea for a change of guidelines or operations,
+please consider proposing it as an `idea <_doc_contributing_ideas>`__
+instead of attempting to change the docs directly.
+
+Making changes to the contributing docs
+=======================================
+
+The information on this site are managed in a GitHub repository
+(`github.com/godotengine/godot-contributing-docs <https://github.com/godotengine/godot-contributing-docs>`__).
+You can contribute to this repository using our regular
+`PR workflow <_doc_pr_workflow>`__. Please adhere to our
+`documentation guidelines <_doc_documentation_guidelines>`__ when making
+changes.
+
+To get started quickly, visit any article on this site and click the "Edit
+on GitHub" button in the top right of the page.
+
+What kinds of information are documented here?
+==============================================
+
+This page is intended for people who are interested in contributing to
+Godot. They should be able to quickly find out how they can contribute,
+be guided to confidently make their first contributions, and be able to
+find all the relevant guidelines to become proficient contributors.
+
+It can be difficult to determine if any piece of information should be
+documented here or elsewhere. Consider reading the following examples
+to get an idea.
+
+The following kinds of information **should** be documented here:
+
+* The expected workflow for contributing to any area of Godot (engine, documentation, etc.).
+* The guidelines for contributing to any project.
+* Organizational structures (tools and teams) of Godot contributors.
+
+The following kinds of information **should not** be documented here:
+
+* Information that is relevant to regular users of Godot (not just potential contributors).
+    * Please document this in `docs.godotengine.org <https://docs.godotengine.org>`__
+* Information that changes across different versions of Godot.
+    * Please document this in `docs.godotengine.org <https://docs.godotengine.org>`__
+* Technical information about any of Godot's repositories.
+    * Please document this in the respective repositories.
+
+How is this page structured?
+============================
+
+This page is structured such that it is easy to find the different ways
+in which you can contribute to Godot. To accomplish this, every *kind*
+of contribution should have a dedicated section in the side bar. If a new
+way to contribute emerges, it should get a dedicated section in the side
+bar so that it is easy to find.

index.rst

@@ -68,6 +68,7 @@ for your topic of interest. You can also use the search function in the top-left
    documentation/class_reference
    documentation/manual/index
    documentation/translation/index
+   documentation/contributing_to_the_contributing_docs
 
 .. toctree::
    :hidden:

other/ideas.rst

@@ -1,3 +1,5 @@
+.. _doc_contributing_ideas:
+
 Contributing ideas and change proposals
 =======================================