Docs: Move build instruction and user guide into technical reference

Move build instruction document and user guide document from getting
started into technical references folder. Rename 'tfm_user_guide.rst'
to 'tfm_run_instruction.rst'. This will make the document structure
more clear for readers.

Signed-off-by: Summer Qin <summer.qin@arm.com>
Change-Id: I69d46151f2cb97c828c1b82775ffd1af9032ed45
diff --git a/docs/technical_references/profiles/tfm_profile_medium.rst b/docs/technical_references/profiles/tfm_profile_medium.rst
index ae24b98..6b384c7 100644
--- a/docs/technical_references/profiles/tfm_profile_medium.rst
+++ b/docs/technical_references/profiles/tfm_profile_medium.rst
@@ -482,7 +482,7 @@
 
 .. [ITS-INTEGRATE] :doc:`ITS integration guide </docs/integration_guide/services/tfm_its_integration_guide>`
 
-.. [TFM-BUILD] :doc:`TF-M build instruction </docs/getting_started/tfm_build_instruction>`
+.. [TFM-BUILD] :doc:`TF-M build instruction </docs/technical_references/instructions/tfm_build_instruction>`
 
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