The client code for Android and Flutter are in typescript language

**Describe the bug**
https://docs.amplify.aws/android/build-a-backend/data/customize-authz/

In the documentation, the client code for Android and Flutter is written in TypeScript.

**To Reproduce**
Steps to reproduce the behavior:
1. Go to '[Android docs](https://docs.amplify.aws/android/build-a-backend/data/customize-authz/)'
2. Verify on customize-authz section.

**Expected behavior**
Code snippets should be Android and flutter specific.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Desktop (please complete the following information):**
- OS: [e.g. iOS]
- Browser [e.g. chrome, safari]
- Version [e.g. 22]

**Smartphone (please complete the following information):**
- Device: [e.g. iPhone6]
- OS: [e.g. iOS8.1]
- Browser [e.g. stock browser, safari]
- Version [e.g. 22]

**Additional context**
Add any other context about the problem here.