Merge pull request #267 from kandarpgautam/users/kandarpgautam/coderu…

…b-processings-typofix

CODE RUB: Fixed Typo In Sample Code

2. Services/2.2 Processings/2.2 Processings.md

@@ -114,7 +114,7 @@ TryCatch(async () =>
     bool isStudentExists = allStudents.Any(retrievedStudent =>
         retrievedStudent.Id == student.Id);
 
-    return isStudentExsits switch {
+    return isStudentExists switch {
         false => await this.studentService.RegisterStudentAsync(student),
         _ => await this.studentService.ModifyStudentAsync(student.Id)
     };