fix: changed member function getStudentCount to countStudents

Author: AmiyahJo

lesson_16/objects/objects_app/src/main/java/com/codedifferently/lesson16/amiyahjones/jobReadinessLab.java

@@ -37,7 +37,7 @@ public Boolean verifyIsSuccessful() {
     return isSuccessful;
    }
 
-   public int getStudentCount() {
+   public int countStudents() {
     int count = students.size();
     System.out.println("Total students enrolles: " + count);
     return count;