[Bug] Fix URL for loading indicator docs

[narin]

Description of Change

Updates documentation URL for Loading indicator

Testing Packages

N/A

Screenshots/Video

N/a

Testing

• [x] Tested on Web

PR Checklist

Code reviewer validation:

• General
  • [ ] PR is linked to ticket(s)
  • [ ] PR has changelog label applied if it's to be included in the changelog
  • [ ] Acceptance criteria:
    • All satisfied or
    • Documented reason for not being performed or
    • Split to separate ticket and ticket is linked by relevant AC(s)
  • [ ] Above PR sections adequately filled out
  • [ ] If any breaking changes, in accordance with the pre-1.0.0 versioning guidelines: a CU ticket has been created for the VA Mobile App detailing necessary adjustments with the package version that will be published by this ticket
• Code
  • [ ] Tests are included if appropriate (or split to separate ticket)
  • [ ] New functions have proper TSDoc annotations

Publish

If changes warrant a new version per the versioning guidelines and the PR is approved and ready to merge:

• [ ] Merge main into branch
• [ ] Merge branch to main
• [ ] Verify that Check Component Integrations workflow ran successfully
• [ ] Publish new version after merging

[TimRoe]

Seeing the ticket it's linked to, Jessica didn't want any other changes with the Storybook for Loading indicator did she?