More release docs for voltha-lib-go

Change-Id: Ia4ccad89877b654a6cbc91d0b032f0cadb17e60d
diff --git a/howto/release/repositories/index.rst b/howto/release/repositories/index.rst
index 60f9081..e35cd9d 100644
--- a/howto/release/repositories/index.rst
+++ b/howto/release/repositories/index.rst
@@ -1,5 +1,5 @@
-Release
-=======
+Release: Repositories
+=====================
 
 .. toctree::
    :maxdepth: 1