doc/install: applied formatting fixes to script

doc/install.sh

@@ -1,5 +1,7 @@
 #!/bin/bash
 
+# NOTE: This script is still a work in progress
+
 # This script is meant to automate the deployment of Szurubooru via Docker/Docker-Compose,
 # and to automatically take the necessary steps to allow Szurubooru to run on ARM devices
 # such as the Raspberry Pi.
@@ -160,4 +162,3 @@ chown -R $puid:$guid "$mount"
 
 echo "All done!  You should now be able to access Szurubooru using the port number you set."
 exit 0
-