[DOC] Fix docs requirements and Sphinx profiles

- force lfdocs-confr~=0.7.5 in docs/requirements-docs.txt
- add funcparserlib==1.0.0a0 in docs/requirements-docs.txt
- enforce compatible versions in other listed packages

Issue-ID: DOC-765

Signed-off-by: guillaume.lambert <guillaume.lambert@orange.com>
Change-Id: If3c9758cb9d691b222b04a22145f33cfb4f2a72b
1 file changed