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/getting_started/tfm_sw_requirement.rst b/docs/getting_started/tfm_sw_requirement.rst
index e720647..03f5629 100644
--- a/docs/getting_started/tfm_sw_requirement.rst
+++ b/docs/getting_started/tfm_sw_requirement.rst
@@ -72,7 +72,7 @@
       https://cmake.org/files.
 
 CMake handles all external dependencies, but if you wish to alter this
-behaviour, see :ref:`docs/getting_started/tfm_build_instruction:Manual
+behaviour, see :ref:`docs/technical_references/instructions/tfm_build_instruction:Manual
 dependency management`
 
 ********
@@ -150,7 +150,7 @@
     curl -L http://sourceforge.net/projects/plantuml/files/plantuml.jar/download --output ~/plantuml/plantuml.jar
 
 Clone the TF-M Sources
-(see :ref:`docs/getting_started/tfm_build_instruction:Getting the source-code`),
+(see :ref:`docs/technical_references/instructions/tfm_build_instruction:Getting the source-code`),
 then
 
 .. code-block:: bash
@@ -241,7 +241,7 @@
 Download and install the required tools from above.
 
 Clone the TF-M Sources
-(see :ref:`docs/getting_started/tfm_build_instruction:Getting the source-code`),
+(see :ref:`docs/technical_references/instructions/tfm_build_instruction:Getting the source-code`),
 then
 
 .. code-block:: bash