chore: typo to release note

[luohoufu]

What does this PR do

This pull request includes updates to the Chinese release notes in the docs/content.zh/docs/release-notes/_index.md file. The changes focus on improving the descriptions of fixes related to LDAP user mapping and Agent connection configurations.

Improvements to release notes:

• Updated the description for LDAP user mapping to indicate optimization instead of just a fix.
• Updated the description for Agent connection configuration to indicate optimization instead of just a fix.

Rationale for this change

Standards checklist

• The PR title is descriptive
• The commit messages are semantic
• Necessary tests are added
• Updated the release notes
• Necessary documents have been added if this is a new feature
• Performance tests checked, no obvious performance degradation