[feat] docs; update admonition syntax (#68842)

* [feat] docs; update admonition syntax

- Standardizes according to style conventions: https://grafana.com/docs/writers-toolkit/style-guide/style-conventions/#admonitions
- Prepares docs for better, uniform admonition style.

* Remove false positives and irregularities

* false positive removal

* Update docs/sources/datasources/mysql/_index.md

* Update docs/sources/developers/angular_deprecation/angular-plugins.md

* fix link errors

* Prettify some nested blockquotes

* remoe unnecessary admonition

docs/sources/panels-visualizations/visualizations/time-series/index.md

@@ -34,7 +34,9 @@ weight: 90
 
 The time series visualization type is the default and primary way to visualize time series data as a graph. It can render series as lines, points, or bars. It is versatile enough to display almost any time-series data. [This public demo dashboard](https://play.grafana.org/d/000000016/1-time-series-graphs?orgId=1) contains many different examples of how it can be configured and styled.
 
-> **Note:** You can migrate from the old Graph visualization to the new Time series visualization. To migrate, open the panel and click the **Migrate** button in the side pane.
+{{% admonition type="note" %}}
+You can migrate from the old Graph visualization to the new Time series visualization. To migrate, open the panel and click the **Migrate** button in the side pane.
+{{% /admonition %}}
 
 ## Tooltip options
 
@@ -222,7 +224,9 @@ Use this option to transform the series values without affecting the values show
 - **Negative Y transform:** Flip the results to negative values on the Y axis.
 - **Constant:** Show the first value as a constant line.
 
-> **Note:** The transform option is only available as an override.
+{{% admonition type="note" %}}
+The transform option is only available as an override.
+{{% /admonition %}}
 
 ## Color options