AppPkg: Fix various typos

[Coeur]

Meta

This is an experimental pull request, as discussed many times on the edk2 mailing-list.
It is:

• an easy pull request
• a non-urgent pull request

It fits the experiment of using a GitHub pull request over a mailing-list patch.

Once reviewed and approved, the maintainer of this repo (edk2-libc) has multiple possibilities to handle it:

• either use command line to rebase/merge/etc. this pull request (git pull https://github.com/coeur/edk2-libc.git Typo-AppPkg)
• either use the GitHub interface and choose to rebase (or merge or squash):

---

Pull Request

This is actually a cherry pick of a larger change updated since 2018 at Coeur/edk2@1ee272d.

[jpshivakavi]

Recommend you to send a patch review request by rebasing to latest edk2-libc code base. The patch request needs to be sent to devel@edk2.groups.io
You may follow the code contribution instructions provided in https://github.com/tianocore/edk2/blob/master/ReadMe.rst

[Coeur]

Not interested in doing patch files anymore. I only do PR.

[bcran]

Would you mind if I re-open this and submit the patch to the mailing list myself?
I'd really like the project to stop throwing good contributions away because we're still using outdated practices like requiring people email patches to the mailing list.

[Coeur]

Sure. go ahead

[jpshivakavi]

@Coeur Could you please add the signed off by tag in the comments section in this format

Signed-off-by:

Post this I will be able to submit email patch to devel@edk2.groups.io

[jpshivakavi]

@Coeur
Could you please add the signed off by tag in the comments section in this format
Signed-off-by: Name

[Coeur]

There are no intellectual property at doing spelling corrections.
Feel free to re-appropriate those fixes.
But edk2 process is too archaic for younger generations: I did a PR to encourage PR review and PR merge, not email patches.