[Documentation] Add Extension nbsphinx-link (#5596)

* Add extension nbsphinx-link: link notebook out of the sphinx root folder to the sphinx project

* Link Notebook custom.ipynb directly from python folder to the sphinx project

* Link Notebook seq_and_func.ipynb directly from python folder to the sphinx project

* Small title fix

* Make interactive graphs visible in readthedocs webpage for seq_and_func.ipynb

* Regenerate outputs for custom.ipynb and remove parts of them

docs/readthedocs/requirements-doc.txt

@@ -39,3 +39,4 @@ sphinx-design==0.2.0
 sphinx-external-toc==0.3.0
 nbsphinx==0.8.9
 sphinx-design==0.2.0
+nbsphinx-link==1.3.0

docs/readthedocs/source/conf.py

@@ -93,7 +93,8 @@ extensions = [
     'sphinx_design',
     'sphinx_external_toc',
     'sphinx_design',
-    'nbsphinx'
+    'nbsphinx',
+    'nbsphinx_link'
 ]
 
 # Add any paths that contain templates here, relative to this directory.

docs/readthedocs/source/doc/Nano/Tutorials/custom.nblink

@@ -0,0 +1,3 @@
+{
+    "path": "../../../../../../python/nano/notebooks/hpo/custom.ipynb"
+}

docs/readthedocs/source/doc/Nano/Tutorials/seq_and_func.nblink

@@ -0,0 +1,3 @@
+{
+    "path": "../../../../../../python/nano/notebooks/hpo/seq_and_func.ipynb"
+}