Update README.md

scripts/benchmarks/README.md

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 # Benchmarks
 
-These benchmarks test how fast various css-in-js libraries render with react components. They do not necessarily represent how fast a css-in-js library will be in the real world and are used by emotion to stop performance regressions in render performance/caching.
+These benchmarks test how fast emotion renders with react components. They do not necessarily represent how fast a css-in-js library will be in the real world and are used by emotion to stop performance regressions in render performance/caching.
 
 To run these benchmarks, visit https://benchmarks.emotion.sh and choose a commit.