Update ChangeLog.md

Author: wyunchi-ms

src/Resources/Resources/ChangeLog.md

@@ -18,7 +18,7 @@
         - Additional information about change #1
 -->
 ## Upcoming Release
-* Fixed a NullRef exception issue in New-AzureManagedApplication and Set-AzureManagedApplication.
+* Fixed a NullRef exception issue in `New-AzureManagedApplication` and `Set-AzureManagedApplication`.
 
 ## Version 3.1.0
 * Added `-Tag` parameter support to `Set-AzTemplateSpec` and `New-AzTemplateSpec`