Adding backticks for code font, extra link to match edits in Markdown…

… docs.

Description of the change

Backticks for code font, link for files.get, swapping "calling" with "downloading"

Matches fixes to documentation.

Choose one: Documentation

[X] I have performed a self-review of my code.
[X] I have added detailed comments to my code where applicable.
[X] I have verified that my change does not break existing code.
[X] My PR is based on the latest changes of the main branch (if unsure, please run git pull --rebase upstream main).
[X] I am familiar with the Google Style Guide for the language I have coded in.
[X] I have read through the Contributing Guide and signed the Contributor License Agreement.