Update logging.md

Author: blueshank-gh

docs/platforms/garrysmod/plugins/logging.md

@@ -102,7 +102,7 @@ hook.Add("Example", "sample", function(some_player, some_string)
 	logging:emit("sample", msg_instruct, {
 		{name = "username", value = some_player:Nick()},
 		{name = "identifier", value = some_player:SteamID64()},
-		{name = "sample", value = some_string}
+		{name = "sample_meta", value = some_string}
 	}, {
 		-- we can make it so that if they can see logs, they don't see their own networked to them.
 		exclude = some_player