Proposing a PR to fix a few small typos

[timgates42]

Issue Type

[x] Bug (Typo)

Steps to Replicate and Expected Behaviour

• Examine diesel/core.py and observe specfied, however expect to see specified.
• Examine doc/patterns.rst and observe respones, however expect to see response.
• Examine diesel/core.py and observe othewise, however expect to see otherwise.
• Examine doc/patterns.rst and observe explictly, however expect to see explicitly.
• Examine diesel/core.py and observe delimitted, however expect to see delimited.
• Examine doc/intro.rst and observe concurreny, however expect to see concurrency.
• Examine diesel/protocols/wsgi.py and observe bootsraps, however expect to see bootstraps.
• Examine doc/intro.rst and observe avaiable, however expect to see available.

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/diesel/pull/new/bugfix_typos

Thanks.