Update to include MKR boards

The MKR boards have 7 analog input pins, 0 to 6.

Author: NhatMinh0208

Language/Functions/Analog IO/analogRead.adoc

@@ -16,7 +16,7 @@ subCategories: [ "Analog I/O" ]
 
 [float]
 === Description
-Reads the value from the specified analog pin. The Arduino board contains a 6 channel (8 channels on the Mini and Nano, 16 on the Mega), 10-bit analog to digital converter. This means that it will map input voltages between 0 and 5 volts into integer values between 0 and 1023. This yields a resolution between readings of: 5 volts / 1024 units or, .0049 volts (4.9 mV) per unit. The input range and resolution can be changed using link:../analogreference[analogReference()].
+Reads the value from the specified analog pin. The Arduino board contains a 6 channel (7 channels on MKR boards, 8 on the Mini and Nano, 16 on the Mega), 10-bit analog to digital converter. This means that it will map input voltages between 0 and 5 volts into integer values between 0 and 1023. This yields a resolution between readings of: 5 volts / 1024 units or, .0049 volts (4.9 mV) per unit. The input range and resolution can be changed using link:../analogreference[analogReference()].
 
 It takes about 100 microseconds (0.0001 s) to read an analog input, so the maximum reading rate is about 10,000 times a second.
 [%hardbreaks]
@@ -29,7 +29,7 @@ It takes about 100 microseconds (0.0001 s) to read an analog input, so the maxim
 
 [float]
 === Parameters
-`pin`: the number of the analog input pin to read from (0 to 5 on most boards, 0 to 7 on the Mini and Nano, 0 to 15 on the Mega)
+`pin`: the number of the analog input pin to read from (0 to 5 on most boards, 0 to 6 on MKR boards, 0 to 7 on the Mini and Nano, 0 to 15 on the Mega)
 
 [float]
 === Returns