Update shields.io badge alt text to be GA

README.md

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 # VMware Tanzu Application Service > Hoover UI
 
-[![Beta](https://img.shields.io/badge/Release-GA-darkgreen)](https://img.shields.io/badge/Release-GA-darkgreen) ![Github Action CI Workflow Status](https://github.com/pacphi/cf-hoover-ui/actions/workflows/maven.yml/badge.svg) [![Known Vulnerabilities](https://snyk.io/test/github/pacphi/cf-hoover-ui/badge.svg?style=plastic)](https://snyk.io/test/github/pacphi/cf-hoover-ui) [![Release](https://jitpack.io/v/pacphi/cf-hoover-ui.svg)](https://jitpack.io/#pacphi/cf-hoover-ui/master-SNAPSHOT) [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
+[![GA](https://img.shields.io/badge/Release-GA-darkgreen)](https://img.shields.io/badge/Release-GA-darkgreen) ![Github Action CI Workflow Status](https://github.com/pacphi/cf-hoover-ui/actions/workflows/maven.yml/badge.svg) [![Known Vulnerabilities](https://snyk.io/test/github/pacphi/cf-hoover-ui/badge.svg?style=plastic)](https://snyk.io/test/github/pacphi/cf-hoover-ui) [![Release](https://jitpack.io/v/pacphi/cf-hoover-ui.svg)](https://jitpack.io/#pacphi/cf-hoover-ui/master-SNAPSHOT) [![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)
 
 
 You're a platform operator and you've managed to get [cf-hoover](https://github.com/pacphi/cf-hoover) deployed. It's happily aggregating usage data from multiple foundations.  Now your CIO wants you to build a dashboard.