Docs: fix MD docs (root folder)

[Jay-o-Way]

Summary of the Pull Request

Just a "quick" cleanup of some Markdown files.

Only files in the top folder for now. Let me know if you want me to go through more folders!

PR Checklist

• Closes: no issue
• Communication: I've discussed this with core contributors already. If the work hasn't been agreed, this work might be rejected

Detailed Description of the Pull Request / Additional comments

Validation Steps Performed

Visual

[Jay-o-Way]

it's a username, ignore this

[github-actions]

@check-spelling-bot Report

🔴 Please review

See the 📂 files view, the 📜action log, or 📝 job summary for details.

Unrecognized words (2)

traies
udit

These words are not needed and should be removed

ATX cppcoreguidelines

Some files were automatically ignored 🙈

These sample patterns would exclude them:

^src/modules/powerrename/unittests/testdata/avif_test\.avif$
^src/modules/powerrename/unittests/testdata/heif_test\.heic$

You should consider adding them to:

.github/actions/spell-check/excludes.txt

File matching is via Perl regular expressions.

To check these files, more of their words need to be in the dictionary than not. You can use patterns.txt to exclude portions, add items to the dictionary (e.g. by adding them to allow.txt), or fix typos.

To accept these unrecognized words as correct, update file exclusions, and remove the previously acknowledged and now absent words, you could run the following commands

... in a clone of the git@github.com:Jay-o-Way/PowerToys.git repository
on the MD-files-cleanup branch (ℹ️ how do I use this?):

curl -s -S -L 'https://raw.githubusercontent.com/check-spelling/check-spelling/c635c2f3f714eec2fcf27b643a1919b9a811ef2e/apply.pl' |
perl - 'https://github.com/microsoft/PowerToys/actions/runs/21098049017/attempts/1' &&
git commit -m 'Update check-spelling metadata'

Warnings ⚠️ (2)

See the 📂 files view, the 📜action log, or 📝 job summary for details.

⚠️ Warnings	Count
⚠️ ignored-expect-variant	6
⚠️ large-file	2

See ⚠️ Event descriptions for more information.

If the flagged items are 🤯 false positives

If items relate to a ...

• binary file (or some other file you wouldn't want to check at all).

  Please add a file path to the excludes.txt file matching the containing file.

  File paths are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your files.

  ^ refers to the file's path from the root of the repository, so ^README\.md$ would exclude README.md (on whichever branch you're using).

• well-formed pattern.

  If you can write a pattern that would match it,
  try adding it to the patterns.txt file.

  Patterns are Perl 5 Regular Expressions - you can test yours before committing to verify it will match your lines.

  Note that patterns can't match multiline strings.

[niels9001]

@Jay-o-Way I've dismissed the spelling check alerts for you. Looks like a few conflicts popped up in the meantime :(. If we can get this fixed then I think we can get this merged straight away!

[yeelam-gordon]

🔍 Automated PR Review Summary

Step	Severity	Finding
11-docs-automation	🟢 low	Duplicate contributor entry detected: @snickler/Jeremy Sinclair appears once ...

Review generated by pr-review skill. See Generated Files/prReview/44569/ for full details.

[yeelam-gordon]

Duplicate contributor entry: @snickler / Jeremy Sinclair appears twice (earlier and again here). Please keep one canonical entry in the intended alphabetical position to avoid duplicate attribution.

[niels9001]

@Jay-o-Way is this PR ready to go in?

[Jay-o-Way]

No. It especially Readme is totally outdated. Better start over.
Obviously one of the reasons is the misuse of Readme by putting a changelog in here every time. But that's a different discussion. #25193