Fix analog input comments in UnitTesting example

.github/pull_request_template.md

@@ -12,6 +12,8 @@ Please delete options that are not relevant.
 - [ ] New feature (non-breaking change which adds functionality)
 - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
 - [ ] This change requires a documentation update
+- [ ] I have updated the version in `library.properties` to reflect my changes (advance by 0.01 for minor changes, or a whole number for new features)
+- [ ] I have submitted the pull request
 
 # How Has This Been Tested?
 

CONTRIBUTING.md

@@ -20,3 +20,7 @@ Pull request will be check by three main authors who are linked in
 [REAMDE.md](https://github.com/miguel5612/MQSensorsLib/README.md) and they determine to merge to
 master branch. Later than assessment and debbuging procedures was completed, the contribution 
 will be released.
+
+## Versioning
+
+When making a pull request, please remember to update the `library.properties` file to reflect the changes you've made. If your change is minor, consider advancing the version by 0.01. If you're adding a new feature, you may want to advance the version by a whole number.

examples/UnitTesting/UnitTesting.ino

@@ -27,11 +27,11 @@
 #define         Pin7                     (A7)  //Analog input 7 of your arduino
 #define         Pin8                     (A8)  //Analog input 8 of your arduino
 #define         Pin9                     (A9)  //Analog input 9 of your arduino
-#define         Pin10                    (A10) //Analog input 9 of your arduino
-#define         Pin11                    (A11) //Analog input 9 of your arduino
-#define         Pin12                    (A12) //Analog input 9 of your arduino
-#define         Pin13                    (A13) //Analog input 9 of your arduino
-#define         Pin14                    (A14) //Analog input 9 of your arduino
+#define         Pin10                    (A10) //Analog input 10 of your arduino
+#define         Pin11                    (A11) //Analog input 11 of your arduino
+#define         Pin12                    (A12) //Analog input 12 of your arduino
+#define         Pin13                    (A13) //Analog input 13 of your arduino
+#define         Pin14                    (A14) //Analog input 14 of your arduino
 #define         PWMPin                   (5)   // Pin connected to mosfet
 /***********************Software Related Macros************************************/
 #define         RatioMQ2CleanAir          (9.83) //RS / R0 = 9.83 ppm