fix typo

Author: thesyncim

README.md

@@ -15,8 +15,8 @@ go get -u github.com/gonowa/wasm-opt
 ```
 
 # known issues
-bugs should be reported at https://github.com/WebAssembly/binaryen/issues, afterall this is just a thin wrapper arroung wasm-opt
- * sometimes the container abnormaly exit with erros such core dump or segmentation fault ( try to run with -d option)
+bugs should be reported at https://github.com/WebAssembly/binaryen/issues, after all this is just a thin wrapper arround wasm-opt
+ * core dump or segmentation fault ( try to run with -d option)
 
 # usage