add hyphen

pmanager/rpi.json

@@ -8,7 +8,7 @@
 		"slidesync" : 	[ "/home/curso/code/snowmix/camera1/slide_syncer.sh" ],
 		"static" : 		[ "/usr/bin/omxplayer", "/home/curso/mute.wav" ],
 		"fixservo" : 	[ "/home/curso/code/snowmix/camera1/restart-servo.py" ],
-		"playvideo":	[ "/home/curso/code/snowmix/camera1/play_video.sh" ],
+		"play-video":	[ "/home/curso/code/snowmix/camera1/play_video.sh" ],
 		"controlvideo":	[ "/home/curso/code/snowmix/camera1/control_video.sh" ]
 	}
 }