[Docs Site] fix typo in rules-of-workflows.mdx

[grocco]

Summary

Renamed mistyped request (not defined) to req

• The documentation style guide has been adhered to.

[hyperlint-ai]

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PR Change Summary

Corrected a typo in the rules-of-workflows documentation by renaming 'request' to 'req'.

• Renamed 'request' to 'req' in the documentation code
• Ensured adherence to the documentation style guide

Modified Files

• src/content/docs/workflows/build/rules-of-workflows.mdx

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