rateLimiterApi name needs to be changed to studentRateLimiterApi

[nagkumar]

https://github.com/lokeshgupta1981/Spring-Boot-Examples/blob/master/spring-boot-resilience4j/src/main/resources/application.properties

has property studentRateLimiterApi

But the control method that is referring to is named as rateLimiterApi

https://github.com/lokeshgupta1981/Spring-Boot-Examples/blob/master/spring-boot-resilience4j/src/main/java/com/howtodoinjava/resilience4j/controller/StudentController.java

May be needs to change this name to studentRateLimiterApi