Adding a note to use of Private Service Access module

[RachaelSTamakloe]

This PR adds variations of the below note to examples that reference the community/modules/network/private-service-access module.

  # Private Service Access (PSA) requires the compute.networkAdmin role which is included in the Owner role, but not Editor
  # PSA is a best practice for Filestore instances, but can be optionally
  # removed by deleting the private_service_access module and any references to the module
  # by Filestore modules. PSA is required for all Parallelstore functionality.
  # https://cloud.google.com/vpc/docs/configure-private-services-access#permissions
  - id: private_service_access
    source: community/modules/network/private-service-access
    use: [network]

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Please take the following actions before submitting this pull request.

• Fork your PR branch from the Toolkit "develop" branch (not main)
• Test all changes with pre-commit in a local branch #
• Confirm that "make tests" passes all tests
• Add or modify unit tests to cover code changes
• Ensure that unit test coverage remains above 80%
• Update all applicable documentation
• Follow Cluster Toolkit Contribution guidelines #

[tpdownes]

1. Edit the comment in blueprints without Filestore so that it does not mention Filestore
2. "change "deleting the following 3 lines" to somethign that is more accurate across all blueprints. I suggest "delete the private-service-access module" but please make a choice based on thorough review.
3. Formatting suggestion

The first line in this comment is quite long. Please format whole comment so no line is more than 80 characters long and the URL remains on its own line.

  # Private Service Access (PSA) requires the compute.networkAdmin role which is included in the Owner role, but not Editor
  # PSA is a best practice for Filestore instances, but can be optionally
  # removed by deleting the following 3 lines and any references to the module
  # by Filestore modules. PSA is required for all Parallelstore functionality.
  # https://cloud.google.com/vpc/docs/configure-private-services-access#permissions