Update readme

update pr builder comment

.github/workflows/pr-builder.yml

@@ -1,7 +1,7 @@
 # This workflow will build the project on pull requests with tests
 # Uses:
 #   OS: ubuntu-latest
-#   JDK: Adopt JDK 11 and Adopt JDK 17
+#   JDK: Adopt JDK 8, Adopt JDK 11 and Adopt JDK 17
 
 name: PR Builder
 
@@ -19,11 +19,11 @@ jobs:
 
     strategy:
       matrix:
-        java-version: [ 11, 17 ]
+        java-version: [ 8, 11, 17 ]
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up Adopt JDK 11 and Adopt JDK 17
+      - name: Set up Adopt JDK 
         uses: actions/setup-java@v2
         with:
           java-version: ${{ matrix.java-version }}

README.md

@@ -4,7 +4,7 @@
 | :------------ |:------------- |:-------------
 | master      | [![Build Status](https://wso2.org/jenkins/job/platform-builds/job/identity-api-user/badge/icon)](https://wso2.org/jenkins/job/platform-builds/job/identity-api-user/) | [![Travis CI Status](https://travis-ci.org/wso2/identity-api-user.svg?branch=master)](https://travis-ci.org/wso2/identity-api-user?branch=master)|
 
-This repository contains modules related to the identity user related REST apis 
+This repository contains modules related to the identity user related REST apis. It can be compiled using JDK 8, JDK 11 or JDK 17.  
 
 ### Plugin to Generate the API Stubs