Update ui-editable flag usage

Author: Tim Mendoza

src/commands/rtc/apps/video/deploy.js

@@ -51,7 +51,8 @@ DeployCommand.flags = Object.assign(
     'ui-editable': flags.boolean({
       required: false,
       default: true,
-      description: "Whether the app's files and variables can be edited in the Twilio console.",
+      description: "Specifies whether the app's files and variables can be edited in the Twilio console.",
+      allowNo: true,
     }),
   },
   TwilioClientCommand.flags