docs: Fix a few typos

[timgates42]

There are small typos in:

• README.rst
• pylinter.py

Fixes:

• Should read dissect rather than disect.
• Should read separate rather than seperate.
• Should read propagate rather than propogate.
• Should read particularly rather than particulary.
• Should read message rather than messaage.
• Should read following rather than followig.
• Should read errors rather than erros.

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