Moved language generation commands in cmd to seperate lines

frontend/scripts/generate_language_files.cmd

@@ -1,4 +1,5 @@
 echo 'Generating language files'
 cd app_flowy
 
-flutter pub run easy_localization:generate -S assets/translations/ && flutter pub run easy_localization:generate -f keys -o locale_keys.g.dart -S assets/translations/ -s en.json
+call flutter pub run easy_localization:generate -S assets/translations/
+call flutter pub run easy_localization:generate -f keys -o locale_keys.g.dart -S assets/translations/ -s en.json