DOC: fix docstring of DatetimeIndex.delete
DOC: fix indentation in v0.14.1.txt
Specify in docs that join='outer' is the defaul for align method.
Merge pull request #7734 from lexual/docs_specify_align_join_default

Specify in docs that join='outer' is the defaul for align method.
spell fix: seperated -> separated
Fix many spelling mistakes in the docs.
Make consistent use of acronyms, and US spellings for serializ*
Merge pull request #7742 from lexual/docs_spell_fix

spell fix: seperated -> separated
Merge pull request #7745 from lexual/docs_fixes

Docs fixes
DOC: Fix typo conncection -> connection
Merge pull request #7747 from ElDeveloper/typo-fix

DOC: Fix typo conncection -> connection