docs: Fix a few typos

[timgates42]

There are small typos in:

• consul/base.py
• tests/test_twisted.py

Fixes:

• Should read perform rather than peform.
• Should read twisted rather than twsited.
• Should read synchronization rather than syncronization.
• Should read parameter rather than paramater.

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