documentation review

Documentation/nfs.md

@@ -4,7 +4,7 @@
 
 ### Docker compose
 
-```
+```text
 volumes:
   etcPihole:
     name: pihole_etc
@@ -17,7 +17,7 @@ volumes:
 
 ### .env
 
-```
+```text
 #VOLUME_PIHOLE_O="addr=10.10.1.1,rw"
 #VOLUME_PIHOLE_DEVICE=":/export/docker-volumes/pihole/pihole-etc"
 #VOLUME_PIHOLE_TYPE="nfs"