v2.2.1
DOC: Improve Doxygen Javadoc style examples
DOC: standardize capitalization of headings (#25016)
DOC: Remove extra indents in documents
DOC: add 2.0 release note highlights and narrative content
MAINT: Update numpy.core paths to numpy._core
Merge pull request #26680 from ev-br/smoke-docs-followup
DOC: add CI and NEP commit acronyms
DOC: Change selected hardlinks to NEPs to intersphinx mappings
DOC: Update docs build dependencies install cmd (#25774)
DOC: Added `CONTRIBUTING.rst` (#27469)
DOC: Fix some reference warnings
DOC: add missing word to internals.rst (#25067)
DOC: reorganize developer docs, use scikit-image as a base for change
MAINT,DOC: Update release guide
DOC: devguide cleanup: remove Gitwash and too verbose Git details
DOC: Reorganize user guide outline
