Merge docs from cherry to master

Isue-ID: NONRTRIC-521
Change-Id: I382a4e78cc1c6a96c69f936ec86ec3f5fc72ebd8
Signed-off-by: JohnKeeney <john.keeney@est.tech>
diff --git a/docs/index.rst b/docs/index.rst
index a32323d..708344b 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -13,6 +13,7 @@
    ./developer-guide.rst
    ./api-docs.rst
    ./use-cases.rst
+   ./requirements.rst
    ./release-notes.rst
 
 * :ref:`search`