docs: readme improvement

Author: csviri

README.md

@@ -1,11 +1,12 @@
 # admission-controller-framework
 
-Framework and tooling to support implementing admission controllers for Kubernetes in Java.
-Supports both **quarkus** and **spring boot**. Both Sync and Async programing model.
+Framework and tooling to support
+implementing [admission controllers](https://kubernetes.io/docs/reference/access-authn-authz/admission-controllers/) for
+Kubernetes in Java. Supports both **quarkus** and **spring boot**. Both Sync and Async programing model.
 
 ## Sample Usage
 
-Defining a mutation or validation controller should be simple as: 
+Defining a mutation or validation controller should be simple as:
 
 https://github.com/java-operator-sdk/admission-controller-framework/blob/0946595d941b789caef6a69b34c2e5be8c6b59cf/samples/quarkus/src/main/java/io/javaoperatorsdk/admissioncontroller/sample/quarkus/AdmissionControllerConfig.java#L31-L68