Fix minor typos

[g-despot]

What's being changed:

Fixes of minor typos throughout the docs.

Type of change:

• Documentation updates (non-breaking change to fix/update documentation)

How Has This Been Tested?

• GitHub action – automated build completed without errors
• Local build - the site works as expected when running yarn start

note, you can run yarn verify-links to test site links locally

[orca-security-eu]

Orca Security Scan Summary

Status	Check	Issues by priority
Passed	Infrastructure as Code	0   0   0   0	View in Orca
Passed	SAST	0   0   0   0	View in Orca
Passed	Secrets	0   0   0   0	View in Orca
Passed	Vulnerabilities	0   0   0   0	View in Orca

[databyjp]

Hey @g-despot - just spotted this while looking at another PR.

I think "an Weaviate" is the correct usage, because the a/an distinction is based on how it is pronounced rather than how it is written. See e.g. https://www.scribbr.co.uk/frequently-confused-words/a-or-an/

Since Weaviate is pronounced with a vowel sound I think it should be "an Weaviate instance"