Only display 15 lines for emoji picker instead of 30

roles/dmenu/files/scripts/dmenuunicode

@@ -1,7 +1,7 @@
 #!/bin/sh
 
 # Get user selection via dmenu from emoji file.
-chosen=$(cut -d ';' -f1 ~/.local/share/chars/emoji | dmenu -l 30 | sed "s/ .*//")
+chosen=$(cut -d ';' -f1 ~/.local/share/chars/emoji | dmenu -l 15 | sed "s/ .*//")
 
 # Exit if none chosen.
 [ -z "$chosen" ] && exit