docs(dlp-samples): modified region tags and fixed comment

[Sita04]

Modified region tags in accordance with samples from other languages.
The new region tag will be updated in the docs.

• Make sure to open an issue as a bug/issue before writing your code! That way we can discuss the change, evaluate designs, and agree on the general idea
• Ensure the tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

[snippet-bot]

Here is the summary of possible violations 😱

There are 2 possible violations for removing region tag in use.

• samples/snippets/templates.py:23, tag dlp_create_template(usage: page 1).
• samples/snippets/templates.py:137, tag dlp_delete_template(usage: page 1 page 2).

The end of the violation section. All the stuff below is FYI purposes only.

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Here is the summary of changes.

You are about to add 2 region tags.

• samples/snippets/templates.py:23, tag dlp_create_inspect_template
• samples/snippets/templates.py:137, tag dlp_delete_inspect_template

You are about to delete 2 region tags.

• samples/snippets/templates.py:23, tag dlp_create_template
• samples/snippets/templates.py:137, tag dlp_delete_template

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