removed a typo and added documentation to the absoluteValueOf function

src/main/java/com/ugsbo/complexnumcalc/ComplexNumber.java

@@ -128,6 +128,10 @@ public class ComplexNumber {
         return qoutient;
     }
 
+    /**
+     * Calucates the absolute value of this complex number
+     * @return the absolute value
+     */
     public Double absolutValueOf(){
         Double absoluteValue = Math.sqrt(Math.pow(this.realPart, 2) + Math.pow(this.imaginaryPart, 2)) ;
         return absoluteValue;

src/test/java/com/ugsbo/complexnumcalc/AbsoluteValueOfComplexNumbersTest.java

@@ -6,7 +6,7 @@ import org.junit.Test;
 public class AbsoluteValueOfComplexNumbersTest {
 
     @Test
-    public void TheAbsoluteValueOfAComplexNumberWithOnlyARealPart_IsNotTHeAbsoluteValueOfTheRealPart() {
+    public void TheAbsoluteValueOfAComplexNumberWithOnlyARealPart_IsNotTheAbsoluteValueOfTheRealPart() {
         ComplexNumber complexNumber = new ComplexNumber(Double.valueOf(4), Double.valueOf(0));
         Double expected = Double.valueOf(4);