Add new page for contribute to documentation

Author: arkdong

docs/developers/docs.rst

@@ -0,0 +1,8 @@
+Contribute to documentation
+=======
+
+Zarr uses `hatch <https://hatch.pypa.io/latest/>`_ to manage the development,
+install hatch based on the instructions and then run the following command:
+
+- ``hatch run docs:build`` to render the documentation locally to html.
+- ``hatch run docs:serve`` to serve the documentation locally.

docs/developers/index.rst

@@ -7,3 +7,4 @@ Developer's Guide
 
     contributing
     roadmap
+    docs