fix: capitalize the "H" in "GitHub"

[EndBug]

PR Checklist

Please check if your PR fulfills the following requirements:

• [x] The commit message follows our guidelines: https://github.com/riccardoperra/codeimage/blob/main/CONTRIBUTING.md#commit
• [ ] Tests for the changes have been added (for bug fixes / features)
• [ ] Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

[ ] Bugfix
[ ] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Build related changes
[ ] CI related changes
[ ] Documentation content changes
[x] Other... Please describe: copy fix

What is the current behavior?

Issue Number: N/A

Different parts of the website refer to GitHub as "Github" 😅

What is the new behavior?

Well, I changed it to "GitHub" The misspell was also in a couple of class names, but I decided not to change it.

Does this PR introduce a breaking change?

[ ] Yes
[x] No

Other information

[codesandbox[bot]]

  Open in CodeSandbox Web Editor | VS Code | VS Code Insiders

[changeset-bot[bot]]

⚠️ No Changeset found

Latest commit: 9da057d53eeb6cb2407cc71030a282249ca6e35d

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[riccardoperra]

🙏 thanks. For the class names / variables I will do a review this weekend in order to see if break something (I think the highlight package may cause issue due to ids)