FIxed README and Variable descriptions

[herms14]

Updated README file to make location a required variable Updated variable descriptions based on AVM format

[matt-FFFFFF]

@herms14 lease can you pull in the changes from main? This branch is using the old actions and they are all failing.

[matt-FFFFFF]

You should rebase your branch with Azure/main

[microsoft-github-policy-service[bot]]

2 file(s) have code issues.

File	Issues
.github/policies/avmrequiredfiles.yml	While scanning a multiline plain scalar, found invalid mapping.
.github/policies/branchprotection.yml	While scanning a multiline plain scalar, found invalid mapping.

_{Total execution time: 0.04 seconds}

[herms14]

closing PR. Will submit a new one