docs(okhttp): update documented default value to match actual

[marcin-kozinski]

#skip-changelog

📜 Description

Update the documented default value for captureFailedRequests to match the actual default value in code.

💡 Motivation and Context

Looks like you forgot to update the docs when you flipped the default in 7.1.0 😅

💚 How did you test it?

🫣

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• No new PII added or SDK only sends newly added PII if sendDefaultPII is enabled.
• I updated the docs if needed.
• Review from the native team if needed.
• No breaking change or entry added to the changelog.
• No breaking change for hybrid SDKs or communicated to hybrid SDKs.

🔮 Next steps

[stefanosiano]

Thanks for opening this PR!
yeah, we overlooked it 😅

[adinauer]

Oops. Thanks for the PR @marcin-kozinski !