[3.4] [Mod] Indicate successful run in [p]voicekick (#5367) (#5398)

(cherry picked from commit 17dc9e0c47)

Co-authored-by: krak3n <84792368+the-krak3n@users.noreply.github.com>

Co-authored-by: krak3n <84792368+the-krak3n@users.noreply.github.com>

redbot/cogs/mod/kickban.py

@@ -802,6 +802,7 @@ class KickBanMixin(MixinMeta):
                 until=None,
                 channel=case_channel,
             )
+            await ctx.send(_("User has been kicked from the voice channel."))
 
     @commands.command()
     @commands.guild_only()