Rename --no-display to --no-mirror

The option impacts both video and audio playback, so "no display" is not
an appropriate name.

PR #3978 <https://github.com/Genymobile/scrcpy/pull/3978>

app/data/bash-completion/scrcpy

@@ -33,7 +33,7 @@ _scrcpy() {
         --no-clipboard-autosync
         --no-downsize-on-error
         -n --no-control
-        -N --no-display
+        -N --no-mirror
         --no-key-repeat
         --no-mipmaps
         --no-power-on