docs: Improve getting-started.md documentation

[Ninfa-Jeon]

This commit updates the getting-started guide to fix spelling and grammatical errors. The changes include:

• Correcting typos
• Adding punctuation to fix grammatical mistakes throughout the document

[Ninfa-Jeon]

Hi, I have signed the CLA but I'm unable to re-run the pipeline.

[nhennigan]

Hi @Ninfa-Jeon thanks for contributing! I re-reran the CLA check and it does not seem to have updated yet. Did you sign it recently? Do you have issues contributing to any other Canonical repos?

The documentation check that is failing is a broken link on a different page that I am fixing so that should pass on your next push. The markdown lint is a genuine error though. We try to keep line length less than 80 characters to make it easier to read. 😸

[Ninfa-Jeon]

Hi @Ninfa-Jeon thanks for contributing! I re-reran the CLA check and it does not seem to have updated yet. Did you sign it recently? Do you have issues contributing to any other Canonical repos?

The documentation check that is failing is a broken link on a different page that I am fixing so that should pass on your next push. The markdown lint is a genuine error though. We try to keep line length less than 80 characters to make it easier to read. 😸

Hi @nhennigan thank you for your reply. Yes I just signed it yesterday after seeing this issue and I've faced similar issue on another repo but not on the one my team works with. Do you think I missed something? Additionally, will try to fix the character length-related issue in my next push <3

[Ninfa-Jeon]

After some trial and error I fixed the CI...