[DOCS] Resize images

[mebrein]

Did you read the Contributor Guide?

• Yes, I have read the Contributor Rules and Contributor Development Guide

Is this PR related to a JIRA ticket?

• No, this is a documentation update. The PR name follows the format [DOCS] my subject.

What changes were proposed in this PR?

• I resized images using imagemagick so in the .md files it is no longer needed to specify width, and resulting images are smaller.
• Fixed some minor typo's.

How was this patch tested?

• I visually checked github
• I ran mkdocs serve and mkdocs build.

Did this PR include necessary documentation updates?

• No, this PR does not affect any public API so no need to change the documentation.