Small edit to the Agent upgrade page (#30094)

* added the alias for the page

* renamed the page

* added the renamed page to the guide index page

* removed the upgrade from agent 7 page from the index since it is now combined

* modified the link to fleet automation

Author: iadjivon

content/en/agent/guide/_index.md

@@ -39,9 +39,8 @@ cascade:
 {{< /whatsnext >}}
 
 {{< whatsnext desc="Agent versioning guides:" >}}
-    {{< nextlink href="agent/guide/upgrade" >}}Upgrade to Agent 7{{< /nextlink >}}
     {{< nextlink href="agent/guide/version_differences" >}}Agent Version differences{{< /nextlink >}}
-    {{< nextlink href="agent/guide/upgrade_between_minor_versions" >}}Upgrade Between Minor Versions of the Datadog Agent{{< /nextlink >}}
+    {{< nextlink href="agent/guide/upgrade_agent_fleet_automation" >}} Upgrade your Datadog Agent {{< /nextlink >}}
     {{< nextlink href="agent/guide/agent-v6-python-3" >}}Python version management: Use Python 3 with Datadog Agent v6{{< /nextlink >}}
     {{< nextlink href="agent/guide/python-3" >}}Python 2 to 3 Custom Check Migration{{< /nextlink >}}
 {{< /whatsnext >}}

content/en/agent/guide/upgrade_between_minor_versions.md renamed to content/en/agent/guide/upgrade_agent_fleet_automation.md

@@ -4,6 +4,7 @@ aliases:
   - /agent/faq/upgrade-between-agent-minor-versions
   - /agent/guide/upgrade-between-agent-minor-versions
   - /agent/versions/upgrade_between_agent_minor_versions/
+  - /agent/guide/upgrade_between_minor_versions/
   - /agent/guide/upgrade
 further_reading:
   - link: "/agent/troubleshooting/"
@@ -106,7 +107,7 @@ DD_UPGRADE="true" DD_AGENT_MAJOR_VERSION=7 bash -c "$(curl -L https://install.da
 [1]: /agent/guide/python-3/
 [2]: /agent/fleet_automation/remote_management
 [3]: /agent/fleet_automation/remote_management/#setup
-[4]: https://app.datadoghq.com/fleet/agent-upgrades
+[4]: https://app.datadoghq.com/fleet/install-agent/latest?platform=overview
 [5]: /agent/remote_config/?tab=configurationyamlfile#enabling-remote-configuration
 [6]: https://github.com/DataDog/datadog-agent/releases?page=1
 [7]: /agent/fleet_automation/remote_management/#upgrade-your-agents