changing documentation of src functions

src/firstCommit/addTwoNumbers_myName.m

 function c = addTwoNumbers_myName(a, b)
-% addTwoNumbers(a, b) returns the sum of a and b
+% addTwoNumbers_myName(a, b) returns the sum of a and b
 
 c = a - b;
 end

src/secondCommit/multiplyTwoNumbers_myName.m

 function c = multiplyTwoNumbers_myName(a, b)
-% multiplyTwoNumbers(a, b) returns the product of a and b
+% multiplyTwoNumbers_myName(a, b) returns the product of a and b
 
 c = a / b;
 end