Fix obsolete arg in cycle.sh

Pi_Matrix_Cube/cycle.sh

@@ -15,11 +15,11 @@ FILES=maps/*.jpg
 # Flags passed to globe program each time.
 # --led-pwm-bits=9 because long chain is otherwise flickery (default is 11)
 # -a 3 for 3x3 antialiasing (use 2 or 1 for slower Pi)
-# -r 6 is run time in seconds before exiting
+# -t 6 is run time in seconds before exiting
 # -f 1 fades in/out for 1 second at either end
 # Can add "-p" to this list if you want poles at cube vertices,
 # or --led-rgb-sequence="BRG" with certain RGB matrices, etc.
-set -- --led-pwm-bits=9 -a 3 -r 6 -f 1
+set -- --led-pwm-bits=9 -a 3 -t 6 -f 1
 
 while true; do
 	for f in $FILES; do