Add missing auto-completion for --audio-buffer

app/data/bash-completion/scrcpy

@@ -3,6 +3,7 @@ _scrcpy() {
     local opts="
         --always-on-top
         --audio-bit-rate=
+        --audio-buffer=
         --audio-codec=
         --audio-codec-options=
         --audio-encoder=

app/data/zsh-completion/_scrcpy

@@ -10,6 +10,7 @@ local arguments
 arguments=(
     '--always-on-top[Make scrcpy window always on top \(above other windows\)]'
     '--audio-bit-rate=[Encode the audio at the given bit-rate]'
+    '--audio-buffer=[Configure the audio buffering delay (in milliseconds)]'
     '--audio-codec=[Select the audio codec]:codec:(opus aac raw)'
     '--audio-codec-options=[Set a list of comma-separated key\:type=value options for the device audio encoder]'
     '--audio-encoder=[Use a specific MediaCodec audio encoder]'