[v9.4.x] [feat] docs; update admonition syntax (#68855)

[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

(cherry picked from commit 1c4bb9ca00)

Co-authored-by: Matt Dodson <47385188+MattDodsonEnglish@users.noreply.github.com>

docs/sources/developers/http_api/data_source.md

@@ -77,7 +77,9 @@ Content-Type: application/json
 
 **Example Response**:
 
-Content-Type: application/json
+```http
+HTTP/1.1 200
+Content-Type: application/json
 
 ```
 
@@ -342,7 +344,9 @@ Content-Type: application/json
 ```
 
 **Example Response**:
-
+
+```http
+HTTP/1.1 200
 Content-Type: application/json
 
 ```
@@ -429,7 +433,9 @@ Authorization: Bearer eyJrIjoiT0tTcG1pUlY2RnVKZTFVaDFsNFZXdE9ZWmNrMkZYbk
 
 > **Warning:** This API is deprecated since Grafana v9.0.0 and will be removed in a future release. Refer to the [new data source health check API](#check-data-source-health).
 
-Accept: application/json
+`GET /api/datasources/:datasourceId/health`
+
+Makes a call to the health endpoint of data source identified by the given `datasourceId`. This is not mandatory - every plugin author has to <a href="https://grafana.com/tutorials/build-a-data-source-backend-plugin/#add-support-for-health-checks" target="_blank">implement support for health checks</a> in their plugin themselves.
 
 ### Examples
 
@@ -506,7 +512,9 @@ Content-Type: application/json
 
 ## Fetch data source resources
 
-Accept: application/json
+`GET /api/datasources/uid/:uid/resources/*`
+
+Makes a call to the resources endpoint of data source identified by the given `uid`.
 
 ### Examples
 
@@ -588,13 +596,17 @@ Content-Type: application/json
           },
           "data": {
             "values": [
-
+              [1644488152084, 1644488212084, 1644488272084, 1644488332084, 1644488392084, 1644488452084],
+              [1, 20, 90, 30, 5, 0]
+            ]
           }
         }
       ]
     }
   }
-| 400  | Bad request due to invalid JSON, missing content type, missing or invalid fields, etc. Or one or more data source queries were unsuccessful. Refer to the body for more details. |
+}
+```
+
 #### Status codes
 
 | Code | Description                                                                                                                                                                      |
@@ -696,7 +708,9 @@ Content-Type: application/json
 
 ## Data source proxy calls by id
 
-> **Warning:** This API is deprecated since Grafana v9.0.0 and will be removed in a future release. Refer to the [new data source API for proxying requests](#data-source-proxy-calls).
+{{% admonition type="warning" %}}
+This API is deprecated since Grafana v9.0.0 and will be removed in a future release. Refer to the [new data source API for proxying requests](#data-source-proxy-calls).
+{{% /admonition %}}
 
 `GET /api/datasources/proxy/:datasourceId/*`
 
@@ -770,7 +784,9 @@ Content-Type: application/json
 
 ## Fetch data source resources by id
 
-> **Warning:** This API is deprecated since Grafana v9.0.0 and will be removed in a future release. Refer to the [new data source resources API](#fetch-data-source-resources).
+{{% admonition type="warning" %}}
+This API is deprecated since Grafana v9.0.0 and will be removed in a future release. Refer to the [new data source resources API](#fetch-data-source-resources).
+{{% /admonition %}}
 
 `GET /api/datasources/:datasourceId/resources/*`
 
@@ -870,7 +886,9 @@ Queries a data source having a backend implementation.
 
 `POST /api/ds/query`
 
-> **Note:** Grafana's built-in data sources usually have a backend implementation.
+{{% admonition type="note" %}}
+Grafana's built-in data sources usually have a backend implementation.
+{{% /admonition %}}
 
 **Example request for the Test data source**: