Update README.md

README.md

 		* `@PostConstruct`
 		* `@Config`
 		* `@SpringBootTest`
-		* `@Resource`
+		* `@Qualifier`
 
 
 ## Developmental Notes
 ## Part 9.0 - Creating `Configuration` classes
 * Each of the following `Config` classes should have a class-signature annotation of `@Configuration`
 	* this annotation tells spring to scan for `@Bean` definitions within the scope of the class, and register them to the [IOC Container](https://www.tutorialspoint.com/spring/spring_ioc_containers.htm) for `Inject` and `Autowire` use later.
+* **Tip:** if testing fails, begin researching and attempting to use the `@Qualifier` annotation.
 
 -
 ### Part 9.1 - Create `StudentConfig`