refcator, chore(egen) : refactored code according to template guidelines , performed linter test

[Jayakrishna2801]

This PR includes

1. changed REGION variable to LOCATION
2. added colab enterprise link
3. performed linter test
4. removed contradiction words

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1. If you are opening a PR for Official Notebooks under the notebooks/official folder, follow this mandatory checklist:

• Use the notebook template as a starting point.
• Follow the style and grammar rules outlined in the above notebook template.
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[gericdong]

/gcbrun

[kittyabs]

numerous edits

[katiemn]

/gcbrun

[katiemn]

/gcbrun