Add missing comma in @requires_access_token parameters for AgentCore Identity

[SkyWalker-CMD]

Description

Add missing comma in @requires_access_token parameters for AgentCore Identity quickstart guide.

Type of Change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation update
• Performance improvement
• Code refactoring

Testing

• Unit tests pass locally
• Integration tests pass (if applicable)
• Test coverage remains above 80%
• Manual testing completed

Checklist

• My code follows the project's style guidelines (ruff/pre-commit)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

Security Checklist

• No hardcoded secrets or credentials
• No new security warnings from bandit
• Dependencies are from trusted sources
• No sensitive data logged

Breaking Changes

List any breaking changes and migration instructions:

N/A

Additional Notes

N/A

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
⚠️ Please upload report for BASE (main@10bb727). Learn more about missing BASE report.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #458   +/-   ##
=======================================
  Coverage        ?   86.44%           
=======================================
  Files           ?      123           
  Lines           ?    12317           
  Branches        ?     1892           
=======================================
  Hits            ?    10647           
  Misses          ?     1243           
  Partials        ?      427           

Flag	Coverage Δ
unittests	86.44% <ø> (?)

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[notgitika]

LGTM