hwmon: (max1668) Fix typo in documentation

Signed-off-by: NAndrea Gelmini <andrea.gelmini@gelma.net>
[groeck: Updated subject]
Signed-off-by: NGuenter Roeck <linux@roeck-us.net>

Documentation/hwmon/max1668

@@ -17,7 +17,7 @@ This driver implements support for the Maxim MAX1668, MAX1805 and MAX1989
 chips.
 
 The three devices are very similar, but the MAX1805 has a reduced feature
-set; only two remote temperature inputs vs the four avaible on the other
+set; only two remote temperature inputs vs the four available on the other
 two ICs.
 
 The driver is able to distinguish between the devices and creates sysfs