Update RHEL and Mariner docs to reflect recent changes

[jiasli]

Update RPM-related docs to reflect recent changes:

• [Packaging] Build RPM for RHEL 9 and CentOS Stream 9 Azure/azure-cli#23556
• [Packaging] Drop Mariner 1.0 RPM package Azure/azure-cli#24039

[opbld30]

Learn Build status updates of commit e061c13:

✅ Validation status: passed

File	Status	Preview URL	Details
docs-ref-conceptual/includes/cli-install-linux-dnf.md	✅Succeeded	View
docs-ref-conceptual/includes/cli-install-linux-tdnf.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 learn.microsoft.com contributor guides
• Post your question in the Learn support channel

[opbld32]

Learn Build status updates of commit 7674482:

✅ Validation status: passed

File	Status	Preview URL	Details
docs-ref-conceptual/includes/cli-install-linux-dnf.md	✅Succeeded	View
docs-ref-conceptual/includes/cli-install-linux-tdnf.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 learn.microsoft.com contributor guides
• Post your question in the Learn support channel