ethtool: fix kdoc attr name

Add missing 't' in attrtype.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/ethtool/netlink.h

@@ -37,7 +37,7 @@ static inline int ethnl_strz_size(const char *s)
 /**
  * ethnl_put_strz() - put string attribute with fixed size string
  * @skb:      skb with the message
- * @attrype: attribute type
+ * @attrtype: attribute type
  * @s:        ETH_GSTRING_LEN sized string (may not be null terminated)
  *
  * Puts an attribute with null terminated string from @s into the message.