[WTH Core] Correct GitHub naming and broken link

[codebytes]

Fix capitalization for GitHub Actions
Correct broken link (difference in folder name and link name) on case sensitive file systems.

[codebytes]

for additional information.
The first commit renames a folder.
On windows, the filesystem in case insensitive and the readme link works fine.
From GitHub, the links for hack 44 doesn't work because the linux filesystem has Github and the link referenced GitHub.

I had to check out the repo in WSL to rename the folder. I also could have from GH itself.

The second commit does a search and replace on Github to GitHub.

[plzm]

Reviewed all the changes. The folder/file renames make sense. The text changes (Github->GitHub) also do and thanks for leaving github (all lower case, e.g. in CLI) as is. LGTM.