Fixed some typos

Ops, can believe I missed these.

Author: robsoncouto

Language/Functions/Analog IO/analogRead.adoc

@@ -12,7 +12,7 @@ subCategories: [ "Analog I/O" ]
 
 [float]
 === Description
-Reads the value from the specified analog pin. Arduino boards contain multichannel channel, 10-bit analog to digital converter. This means that it will map input voltages between 0 and the operating voltage(5V or 3.3V) into integer values between 0 and 1023. On a Arduino UNO, for example, this yields a resolution between readings of: 5 volts / 1024 units or, 0.0049 volts (4.9 mV) per unit. See the table below for the usable pins, operating voltage and maximum resolution for some Arduino boards. 
+Reads the value from the specified analog pin. Arduino boards contain a multichannel, 10-bit analog to digital converter. This means that it will map input voltages between 0 and the operating voltage(5V or 3.3V) into integer values between 0 and 1023. On an Arduino UNO, for example, this yields a resolution between readings of: 5 volts / 1024 units or, 0.0049 volts (4.9 mV) per unit. See the table below for the usable pins, operating voltage and maximum resolution for some Arduino boards. 
 
 The input range can be changed using link:../analogreference[analogReference()], while the resolution can be changed (only for Zero, Due and MKR boards) using link:../../zero-due-mkr-family/analogreadresolution[analogReadResolution()].
 
@@ -48,7 +48,7 @@ On ATmega based boards (UNO, Nano, Mini, Mega), it takes about 100 microseconds
 [float]
 === Returns
 
-The analog reading on the pin (int). Although it is limited to resolution of the analog to digital converter (0-1023 for 10 bits or 0-4095 for 12 bits).
+The analog reading on the pin (int). Although it is limited to the resolution of the analog to digital converter (0-1023 for 10 bits or 0-4095 for 12 bits).
 
 --
 // OVERVIEW SECTION ENDS