Changes to documentation for metacat

[shubham-s-agarwal]

Adding more description to the config for metacat and adjusting text to avoid rendering issues

[shubham-s-agarwal]

Fixed the formatting issue, all looks good now finally!

[mart-r]

@shubham-s-agarwal Just an FYI for the future, let's try to squash-and-merge when merging in PRs. That way we don't pollute the master branch with a bunch of commits with messages that are only relevant to the PR, not the whole project. By squashing, we only keep the relevant information from the P.

When a PR is ready to merge, there's a drop down for merging. Once you've selected squash and merge once, it should remember it for the next time.

[shubham-s-agarwal]

That makes sense, I'll be sure to do that from next time. Thanks Mart!