No-op test change

README.md

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 Emscripten SDK
 ==============
 
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 [![CircleCI](https://circleci.com/gh/emscripten-core/emsdk/tree/main.svg?style=svg)](https://circleci.com/gh/emscripten-core/emsdk/tree/main)
 
 The Emscripten toolchain is distributed as a standalone Emscripten SDK. The SDK