Fixed headings

Author: Ryan Willis

articles/azure-arc/servers/azcmagent-extension.md

@@ -22,35 +22,35 @@ The extension manager must be stopped before running any of these commands. Stop
 
 Lists extensions installed on the machine.
 
-## Usage
+### Usage
 
 ```
 azcmagent extension list [flags]
 ```
 
-## Examples
+### Examples
 
 See which extensions are installed on your machine.
 
 ```
 azcmagent extension list
 ```
 
-## Flags
+### Flags
 
 [!INCLUDE [common-flags](includes/azcmagent-common-flags.md)]
 
 ## azcmagent extension remove
 
 Uninstalls extensions on the machine.
 
-## Usage
+### Usage
 
 ```
 azcmagent extension remove [flags]
 ```
 
-## Examples
+### Examples
 
 Remove the "AzureMonitorWindowsAgent" extension from the local machine.
 
@@ -64,7 +64,7 @@ Remove all extensions from the local machine.
 azcmagent extension remove --all
 ```
 
-## Flags
+### Flags
 
 `--all`, `-a`