Proposing a PR to fix a few small typos

[timgates42]

Issue Type

[x] Bug (Typo)

Steps to Replicate and Expected Behaviour

• Examine see/context/resources/test/lxc_test.py, see/context/resources/test/qemu_test.py, see/context/resources/test/vbox_test.py search for returining however expect to see returning.
• Examine see/context/resources/test/vbox_test.py search for allocater however expect to see allocator.
• Examine see/image_providers/test/s3_test.py search for downloaede however expect to see downloaded.
• Examine doc/tutorial_setup.rst search for correcly however expect to see correctly.
• Examine plugins/memory.py search for asyncronous however expect to see asynchronous.

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.

https://github.com/timgates42/see/pull/new/bugfix_typos

Thanks.