Small docs indentation fix

sarama.go

@@ -63,7 +63,7 @@ Consumer related metrics:
 	+-------------------------------------------+------------+--------------------------------------------------------------------------------------+
 	| Name                                      | Type       | Description                                                                          |
 	+-------------------------------------------+------------+--------------------------------------------------------------------------------------+
-	| consumer-batch-size						| histogram  | Distribution of the number of messages in a batch                                    |
+	| consumer-batch-size                       | histogram  | Distribution of the number of messages in a batch                                    |
 	+-------------------------------------------+------------+--------------------------------------------------------------------------------------+
 
 */