Proposing a PR to fix a few small typos

[timgates42]

Issue Type

[x] Bug (Typo)

Steps to Replicate and Expected Behaviour

• Examine pyminifier/init.py, pyminifier/compression.py and observe obfucation, however expect to see obfuscation.
• Examine pyminifier/obfuscate.py and observe preceeed, however expect to see precede.
• Examine pyminifier/obfuscate.py and observe ocurrences, however expect to see occurrences.
• Examine pyminifier/obfuscate.py and observe identifer, however expect to see identifier.
• Examine pyminifier/obfuscate.py and observe cryllic, however expect to see cyrillic.
• Examine pyminifier/obfuscate.py and observe builti, however expect to see built.
• Examine docs/source/index.rst and observe comparsion, however expect to see comparison.
• Examine pyminifier/minification.py and observe brackes, however expect to see brackets.

Notes

Semi-automated issue generated by
https://github.com/timgates42/meticulous/blob/master/docs/NOTE.md

To avoid wasting CI processing resources a branch with the fix has been
prepared but a pull request has not yet been created. A pull request fixing
the issue can be prepared from the link below, feel free to create it or
request @timgates42 create the PR. Alternatively if the fix is undesired please
close the issue with a small comment about the reasoning.

https://github.com/timgates42/pyminifier/pull/new/bugfix_typos

Thanks.