Docs: Link the  Docs + Small Fixes

Change-Id: Ifce633fe50f54b49ffbb5e04e05586503246e54b
Signed-off-by: Elena Uziunaite <elena.uziunaite@arm.com>
diff --git a/docs/index.rst b/docs/index.rst
index 894dd17..9f9bf92 100644
--- a/docs/index.rst
+++ b/docs/index.rst
@@ -11,7 +11,7 @@
 
 .. toctree::
   :caption: Overview
-  :maxdepth: 1
+  :titlesonly:
   :hidden:
 
   Test Framework <tfm_erpc_test_framework>
@@ -24,6 +24,8 @@
   :hidden:
 
   Trusted Firmware-M <https://trustedfirmware-m.readthedocs.io/en/latest/>
+  TF-M Tools <https://trustedfirmware-m.readthedocs.io/projects/tf-m-tools/en/latest/>
+  TF-M Extras <https://trustedfirmware-m.readthedocs.io/projects/tf-m-extras/en/latest/>
 
 .. _Trusted Firmware-M: https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git/
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