Proposing a PR to fix a few small typos

[timgates42]

Issue Type

[x] Bug (Typo)

Steps to Replicate and Expected Behaviour

• Examine pynvim/api/buffer.py and observe transfering, however expect to see transferring.
• Examine pynvim/api/buffer.py and observe omiting, however expect to see omitting.
• Examine pynvim/msgpack_rpc/async_session.py and observe recieved, however expect to see received.
• Examine test/test_decorators.py and observe presesence, however expect to see precedence.
• Examine pynvim/init.py and observe occured, however expect to see occurred.
• Examine pynvim/init.py and observe mangager, however expect to see manager.
• Examine scripts/logging_statement_modifier.py and observe betwen, however expect to see between.
• Examine docs/usage/python-plugin-api.rst and observe acessed, however expect to see accessed.

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/pynvim/pull/new/bugfix_typos

Thanks.