Update README.md with correct link

Author: vsmalladi

README.md

@@ -8,6 +8,8 @@
 | `main` | [![Build Status](https://github.com/ga4gh/task-execution-schemas/actions/workflows/build.yml/badge.svg?branch=main)](https://github.com/ga4gh/task-execution-schemas/actions/workflows/build.yml?query=branch%3Amain) | [![CI Status](https://github.com/ga4gh/task-execution-schemas/actions/workflows/ci.yml/badge.svg?branch=main)](https://github.com/ga4gh/task-execution-schemas/actions/workflows/ci.yml?query=branch%3Amain) | [![Swagger Validator](https://img.shields.io/swagger/valid/3.0?specUrl=https%3A%2F%2Fraw.githubusercontent.com%2Fga4gh%2Ftask-execution-schemas%2Fmain%2Fopenapi%2Ftask_execution_service.openapi.yaml&label=OpenAPI)](https://editor.swagger.io/?url=https://raw.githubusercontent.com/ga4gh/task-execution-schemas/refs/heads/main/openapi/task_execution_service.openapi.yaml) |
 | `develop` | [![Build Status](https://github.com/ga4gh/task-execution-schemas/actions/workflows/build.yml/badge.svg?branch=develop)](https://github.com/ga4gh/task-execution-schemas/actions/workflows/build.yml?query=branch%3Adevelop) | [![CI Status](https://github.com/ga4gh/task-execution-schemas/actions/workflows/ci.yml/badge.svg?branch=develop)](https://github.com/ga4gh/task-execution-schemas/actions/workflows/ci.yml?query=branch%3Adevelop) | [![Swagger Validator](https://img.shields.io/swagger/valid/3.0?specUrl=https%3A%2F%2Fraw.githubusercontent.com%2Fga4gh%2Ftask-execution-schemas%2Fdevelop%2Fopenapi%2Ftask_execution_service.openapi.yaml&label=OpenAPI)](https://editor.swagger.io/?url=https://raw.githubusercontent.com/ga4gh/task-execution-schemas/refs/heads/develop/openapi/task_execution_service.openapi.yaml) |
 
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 Task Execution Service (TES) API
 ================================