Fix extra links to follow latest format

The way it is done currently has been deprecated for a long time and support will be removed in version 8 of sphinx.

This merge request also removes the handling of extra-intersphinx as it is an unused feature.

The handling of the file is done in such a way that it allows to included external dependencies when used only for documentation purpose however this is a limited list as shown in the implementation.

added critical documentation labels

assigned to @samuel.gaist

enabled an automatic merge when the pipeline for 32a78cd9 succeeds

aborted the automatic merge because source branch was updated

added 2 commits

• 8cd861a7 - [doc][conf] Fix extra links to follow latest format
• 6b01fc8e - [doc][conf] Remove extra-intersphinx handling

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enabled an automatic merge when the pipeline for 6b01fc8e succeeds

aborted the automatic merge because source branch was updated

added 1 commit

• 47dcb77c - [conda][meta] Add pinning for test dependencies

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merged

mentioned in commit 59a85d75