Replaced references to master with references to main in docs/maintainers_guide.rst

[matthewscottconroy]

Replaced references to master with references to main in docs/maintainers_guide.rst (#11196)

• Added a release notes file

• Substituted mentions of the master branch with mentions to main in the file docs/maintainers_guide.rst

Summary

fixes #11196 (occurrences of master are replaced with occurrences of main)

Details and comments

There is currently only a main branch, so mentions of master seem to intend to refer to the main branch. The text in docs/maintainers_guide.rst has been adjusted accordingly so that all mentions of master are now mentions of main.

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[CLAassistant]

All committers have signed the CLA.

[jakelishman]

Nice spot, and thanks for the fix!

We don't actually put a release note for documentation-only changes - would you be able to remove it from the PR? Other than that, this is good to merge, thank you!

[jakelishman]

Ace, thanks!

[coveralls]

Pull Request Test Coverage Report for Build 6772459862

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 11 unchanged lines in 3 files lost coverage.
• Overall coverage increased (+0.009%) to 86.942%

---

Files with Coverage Reduction	New Missed Lines	%
crates/qasm2/src/lex.rs	2	91.41%
qiskit/pulse/library/waveform.py	3	93.75%
crates/qasm2/src/parse.rs	6	97.6%

Totals
Change from base Build 6772031961:	0.009%
Covered Lines:	74355
Relevant Lines:	85523

---

💛 - Coveralls