doc: West specific modifications

Update documentation content for West.

Signed-off-by: Pieter De Gendt <[email protected]>

Author: pdgendt

doc/index.rst

@@ -3,8 +3,8 @@
 West (Zephyr's meta-tool)
 #########################
 
-The Zephyr project includes a swiss-army knife command line tool named
-``west``\ [#west-name]_. West is developed in its own `repository`_.
+The Zephyr project developed a swiss-army knife command line tool named
+``west``\ [#west-name]_.
 
 West's built-in commands provide a multiple repository management system with
 features inspired by Google's Repo tool and Git submodules. West is also

doc/why.rst

@@ -117,4 +117,7 @@ West is:
   interoperability with third party tools, and means Zephyr developers
   can always find out what is happening "under the hood" when using west.
 
-See :github:`Zephyr issue #6205 <6205>` and for more details and discussion.
+See `Zephyr issue #6205`_ and for more details and discussion.
+
+.. _Zephyr issue #6205:
+   https://github.com/zephyrproject-rtos/zephyr/issues/6205