updated b20 docs

[soheimam]

What changed? Why?

• Updated heading for information to allow for easier reading
• Added b20 events

[cb-heimdall]

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Reviews	🟡 0/1	Denominator calculation Show calculation 1 if user is bot 0 1 if user is external 0 2 if repo is sensitive 0 From .codeflow.yml 1 Additional review requirements Show calculation Max 0 0 From CODEOWNERS 0 Global minimum 0 Max 1 1 1 if commit is unverified 0 Sum 1

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[cb-heimdall]

Review Error for Baperezagustin1999-code @ 2026-07-23 15:55:21 UTC
User failed mfa authentication, either user does not exist or public email is not set on your github profile. \ see go/mfa-help