Fix note syntax for mstest analyzer docs (#49679)

* Fix note syntax for mstest analyzer docs

* Update mstest0034.md

* Update mstest0053.md

Author: Youssef1313

docs/core/testing/mstest-analyzers/mstest0034.md

@@ -24,7 +24,7 @@ ms.author: enjieid
 | **Introduced in version**           | 3.6.0                                                            |
 | **Is there a code fix**             | No                                                               |
 
-> [NOTE]
+> [!NOTE]
 > This analyzer is no longer relevant for MSTest 4 as `ClassCleanupBehavior` was removed.
 
 ## Cause

docs/core/testing/mstest-analyzers/mstest0039.md

@@ -24,7 +24,7 @@ ms.author: ygerges
 | **Introduced in version**           | 3.8.0                                                                  |
 | **Is there a code fix**             | Yes                                                                    |
 
-> [NOTE]
+> [!NOTE]
 > This analyzer is no longer relevant for MSTest 4 as the old assertion APIs were removed.
 
 ## Cause

docs/core/testing/mstest-analyzers/mstest0053.md

@@ -25,7 +25,7 @@ ai-usage: ai-generated
 | **Introduced in version**           | 3.11.0                                                                                   |
 | **Is there a code fix**             | Yes                                                                                      |
 
-> [NOTE]
+> [!NOTE]
 > This analyzer is no longer relevant for MSTest 4 as the assertion APIs with format parameters were removed.
 
 ## Cause