i2c: core: fix typo in comment

Signed-off-by: Shailendra Verma <shailendra.capricorn@gmail.com>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>

drivers/i2c/i2c-core.c

@@ -1673,7 +1673,7 @@ void i2c_del_adapter(struct i2c_adapter *adap)
 	 * FIXME: This is old code and should ideally be replaced by an
 	 * alternative which results in decoupling the lifetime of the struct
 	 * device from the i2c_adapter, like spi or netdev do. Any solution
-	 * should be throughly tested with DEBUG_KOBJECT_RELEASE enabled!
+	 * should be thoroughly tested with DEBUG_KOBJECT_RELEASE enabled!
 	 */
 	init_completion(&adap->dev_released);
 	device_unregister(&adap->dev);