[V3] Update code standards (black code format pass) (#1650)

* ran black: code formatter against `redbot/` with `-l 99`

* badge

redbot/cogs/economy/locales/regen_messages.py

@@ -1,15 +1,11 @@
 import subprocess
 
-TO_TRANSLATE = [
-    '../economy.py'
-]
+TO_TRANSLATE = ["../economy.py"]
 
 
 def regen_messages():
-    subprocess.run(
-        ['pygettext', '-n'] + TO_TRANSLATE
-    )
+    subprocess.run(["pygettext", "-n"] + TO_TRANSLATE)
 
 
 if __name__ == "__main__":
-    regen_messages()
+    regen_messages()