Revert "[v9.5.x] [feat] docs; update admonition syntax" (#68989)

Revert "[v9.5.x] [feat] docs; update admonition syntax (#68856)"

This reverts commit 08ea5c94c6.

I believe that because of automatic conflict resolution, this backport PR contained a number of extra changes that were not part of the update to use admonition syntax.

I'm first going to revert this PR to prevent the confusing behavior in PRs like #68832.

If we still want admonition changes backported, we can open a new PR which I would like to be a reviewer on to double check.

Signed-off-by: Jack Baldry <jack.baldry@grafana.com>

docs/sources/shared/upgrade/upgrade-common-tasks.md

@@ -7,17 +7,13 @@ Because Grafana upgrades are backward compatible, the upgrade process is straigh
 
 In addition to common tasks you should complete for all versions of Grafana, there might be additional upgrade tasks to complete for a version.
 
-{{% admonition type="note" %}}
-There might be minor breaking changes in some releases. We outline these changes in the [What's New ]({{< relref "../../whatsnew/" >}}) document for each release.
-{{% /admonition %}}
+> **Note:** There might be minor breaking changes in some releases. We outline these changes in the [What's New ]({{< relref "../../whatsnew/" >}}) document for each release.
 
 For versions of Grafana prior to v9.2, we published additional information in the [Release Notes]({{< relref "../../release-notes/" >}}).
 
 When available, we list all changes with links to pull requests or issues in the [Changelog](https://github.com/grafana/grafana/blob/main/CHANGELOG.md).
 
-{{% admonition type="note" %}}
-When possible, we recommend that you test the Grafana upgrade process in a test or development environment.
-{{% /admonition %}}
+> **Note:** When possible, we recommend that you test the Grafana upgrade process in a test or development environment.
 
 ## Back up the Grafana database