docs: Decouple refrences from /docs folder

Signed-off-by: Anton Komlev <anton.komlev@arm.com>
Change-Id: I1955201382074eb9e6dd80aadbc456eb09aecb22
diff --git a/docs/contributing/contributing_process.rst b/docs/contributing/contributing_process.rst
index 60faaec..95afef0 100644
--- a/docs/contributing/contributing_process.rst
+++ b/docs/contributing/contributing_process.rst
@@ -5,7 +5,7 @@
 
 .. Note::
 
-   Please contact :doc:`maintainers </docs/contributing/maintainers>` for any
+   Please contact :doc:`maintainers </contributing/maintainers>` for any
    questions.
 
 - Subscribe to `TF-M development
@@ -19,22 +19,22 @@
   <https://developer.trustedfirmware.org/maniphest>`_, put as many details as
   possible in the description. Add 'Trusted Firmware M' in the 'Tags' field.
 - For non-trivial changes, need to follow the design proposal process
-  :doc:`Design Proposal Guideline </docs/contributing/tfm_design_proposal_guideline>`
+  :doc:`Design Proposal Guideline </contributing/tfm_design_proposal_guideline>`
   for the TF-M project.
 - After the design has been accepted by the maintainer(s), a corresponding
   patch should be posted; follow guidelines below:
 
   - Clone the TF-M code on your own machine from `TF-M git repository
     <https://git.trustedfirmware.org/TF-M/trusted-firmware-m.git>`_.
-  - Follow the :doc:`TF-M getting started </docs/getting_started/tfm_getting_started>`,
-    :doc:`Build Instructions </docs/technical_references/instructions/tfm_build_instruction>` and
-    :doc:`Coding Guide </docs/contributing/coding_guide>` for the TF-M project.
+  - Follow the :doc:`TF-M getting started </getting_started/tfm_getting_started>`,
+    :doc:`Build Instructions </technical_references/instructions/tfm_build_instruction>` and
+    :doc:`Coding Guide </contributing/coding_guide>` for the TF-M project.
   - Make your changes in logical chunks to help reviewers. Each commit should
     be a separate review and either work properly or be squashed after the
     review and before merging.
   - Update documentation in docs/ folder if needed.
   - Test your changes and add details to the commit description.
-  - The code is accepted under :doc:`DCO </docs/contributing/dco>`, Developer
+  - The code is accepted under :doc:`DCO </contributing/dco>`, Developer
     Certificate of Origin, so you must add following fields to your
     commit description:
 
@@ -66,7 +66,7 @@
 
        git push https://review.trustedfirmware.org/TF-M/trusted-firmware-m.git HEAD:refs/for/master
 
-- Add relevant :doc:`maintainers </docs/contributing/maintainers>` for reviewing
+- Add relevant :doc:`maintainers </contributing/maintainers>` for reviewing
   the patch.
 - You may be asked to provide further details or make additional changes.
 - You can discuss further with maintainer(s) by directly over email if