Update capacity_monitoring.md

Author: davissp14

docs/capacity_monitoring.md

@@ -6,16 +6,16 @@ Disk capacity is monitored at regular intervals. When capacity exceeds the pre-d
 Disk capacity must be brought below 90% before read/writes will be re-enabled. The best way to do this is to simply extend your volume.
 
 **List your volumes**
-```
+```bash
 fly volumes list --app flex-testing
 
 ID                  	STATE  	NAME   	SIZE	REGION	ZONE	ENCRYPTED	ATTACHED VM   	CREATED AT
 vol_okgj54527584y2wz	created	pg_data	10GB	lax   	1581	true     	9185340f4d3383	59 minutes ago
 ```
 
 **Extend the volume**
-```
-$ fly volumes extend vol_w0enxv3o9pov8okp --size 15 --app flex-testing
+```bash
+fly volumes extend vol_w0enxv3o9pov8okp --size 15 --app flex-testing
         ID: vol_okgj54527584y2wz
       Name: pg_data
        App: flex-testing
@@ -29,6 +29,6 @@ You will need to stop and start your machine to increase the size of the FS
 ```
 
 **Restart the Machine tied to your Volume**
-```
+```bash
 fly machines restart 9185340f4d3383 --app flex-testing
 ```