Cleaned up typos, fixes grammatical errors and other related fixes (#4215)

* cleaned up typo, fixes, grammatical and other related fixes (#2)

* typo in Lightshot app name

* remove trailing comma in applications.json

* consistent capitalization of Windows, WinGet - only user-facing text

	- includes update to devdocs-generator.ps1, so docs for tweaks modifying registry will have `Windows settings` rather than `windows settings`

* various fixes for typos, style, punctuation and capitalization

* capitalize 'AM'

* Update README.md

change formatting for GitHub UI interaction form code format (` `) to bold md

Co-authored-by: Jay <65828559+Jay-o-Way@users.noreply.github.com>

* typos and wording in docs

---------

Co-authored-by: Jay <65828559+Jay-o-Way@users.noreply.github.com>