Fix release notes for 2.31.0

[jiasli]

Fix #2862

Because #2807 removed line

# [Current release notes](#tab/azure-cli)

The release pipeline task "Release Notes" was not able find the place to insert new entries, causing 2.31.0 entries to be missing from #2856.

[opbld32]

Docs Build status updates of commit 9eaf3c1:

✅ Validation status: passed

File	Status	Preview URL	Details
docs-ref-conceptual/release-notes-azure-cli.md	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel

[opbld33]

Docs Build status updates of commit a6307d7:

✅ Validation status: passed

File	Status	Preview URL	Details
docs-ref-conceptual/release-notes-azure-cli.md	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel

[opbld32]

Docs Build status updates of commit dbe7dec:

✅ Validation status: passed

File	Status	Preview URL	Details
docs-ref-conceptual/release-notes-azure-cli.md	✅Succeeded	View

For more details, please refer to the build report.

Note: Broken links written as relative paths are included in the above build report. For broken links written as absolute paths or external URLs, see the broken link report.

For any questions, please:

• Try searching the docs.microsoft.com contributor guides
• Post your question in the Docs support channel