docs: fix Stability AI source link

[saime428]

Description

Fix the Stability AI docs link to point to the actual generate_image_stability.py source file under src/strands_tools.

Related Issues

None.

Documentation PR

N/A.

Type of Change

Documentation update

Testing

• git diff --check
• Targeted local Markdown link check for docs/stability_ai_tool.md

I did not run hatch run prepare; this is a docs-only relative-link fix.

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature
• My changes generate no new warnings
• Any dependent changes have been merged and published

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[saime428]

Hi, checking in on this one. This only fixes the broken relative link to src/strands_tools/generate_image_stability.py. If the project prefers a different link style here, I can update it.

[saime428]

Following up on this PR. The authorization check passes, while check-access-and-checkout is still waiting on maintainer approval. Please let me know if any changes are needed from my side.