fixed converter

Author: 0xflotus

README.md

@@ -56,7 +56,7 @@ If you wish to update the online documentation. Push directly to the `release` b
   - `obj`: python builtin types
 - `src`: using the other subcrates to bring rustpython to life.
 - `docs`: documentation (work in progress)
-- `py_code_object`: CPython bytecode to rustpython bytecode convertor (work in progress)
+- `py_code_object`: CPython bytecode to rustpython bytecode converter (work in progress)
 - `wasm`: Binary crate and resources for WebAssembly build
 - `tests`: integration test snippets