Remove bash from codeblock tags

Marcel Amiraultrequested to merge
docs-bash-to-toml into master

What does this MR do?

We are standardizing our codeblocks, as per gitlab#32881 (closed).

This MR changes ```bash to the appropriate tag, such as shell, toml (many were set as bash, but actually were toml), etc. Also adds some language tags to nearby codeblocks that had no language.

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