docs: fix typos and made spell checker happy again

[bhovhannes]

↪️ Pull Request

Getting familiar with Parcel codebase and noticed a few typos. Thought it will be a good way to see how MR pipeline works.

💻 Examples

N/A.

🚨 Test instructions

N/A.

✔️ PR Todo

• Added/updated unit tests for this change
• Filled out test instructions (In case there aren't any unit tests)
• Included links to related issues/PRs

[height]

Link Height tasks by mentioning a task ID in the pull request title or commit messages, or description and comments with the keyword link (e.g. "Link T-123").

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[bhovhannes]

Some checks fail, what is typically done in this case?

[mischnic]

You don't have to do anything, they are unfortunately flakey. I have restarted them