readme: fix word Performance

0xflotus · indutny · commit 4483adcebb1a · 2019-05-02T01:36:32.000+02:00
PR-URL: #23 Reviewed-By: Fedor Indutny <fedor@indutny.com>
diff --git a/README.md b/README.md
@@ -24,7 +24,7 @@ This project is a port of [http_parser][0] to TypeScript. [llparse][1] is used
 to generate the output C and/or bitcode artifacts, which could be compiled and
 linked with the embedder's program (like [Node.js][7]).
 
-## Peformance
+## Performance
 
 So far llhttp outperforms http_parser:
 
