Fix formatting of [p]names. (#6538)

Co-authored-by: Michael Oliveira <34169552+Flame442@users.noreply.github.com>

Author: seiftheman

redbot/cogs/mod/names.py

@@ -309,9 +309,9 @@ async def names(self, ctx: commands.Context, *, member: discord.Member):
         usernames, display_names, nicks = await self.get_names(member)
         parts = []
         for header, names in (
-            (_("Past 20 usernames:"), usernames),
-            (_("Past 20 global display names:"), display_names),
-            (_("Past 20 server nicknames:"), nicks),
+            (_("Past 20 usernames: "), usernames),
+            (_("Past 20 global display names: "), display_names),
+            (_("Past 20 server nicknames: "), nicks),
         ):
             if names:
                 parts.append(bold(header) + ", ".join(names))