Proposing a PR to fix a few small typos

[timgates42]

Issue Type

[x] Bug (Typo)

Steps to Replicate and Expected Behaviour

• Examine docs/source/cache_mechanisms.rst, docs/source/refactoring.rst and observe archieve, however expect to see achieve.
• Examine docs/source/globals_jump.rst, docs/source/show_documentation.rst and observe accesible, however expect to see accessible.
• Examine sublime_rope.py and observe syncronizing, however expect to see synchronizing.
• Examine docs/source/getting_started.rst and observe refectoring, however expect to see refactoring.
• Examine rope_pyflakes/checker.py and observe noisly, however expect to see noisily.
• Examine sublime_rope.py and observe neceessary, however expect to see necessary.
• Examine rope_pyflakes/messages.py and observe explicity, however expect to see explicitly.
• Examine docs/source/cache_mechanisms.rst and observe archieved, however expect to see achieved.
• Examine rope/refactor/patchedast.py and observe approaximation, however expect to see approximation.
• Examine rope/refactor/change_signature.py and observe applyed, however expect to see applied.

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/SublimeRope/pull/new/bugfix_typos

Thanks.