Fix: improved documentation wording for clarity

docs/en/docs/index.md

@@ -38,7 +38,7 @@ FastAPI is a modern, fast (high-performance), web framework for building APIs wi
 The key features are:
 
 * **Fast**: Very high performance, on par with **NodeJS** and **Go** (thanks to Starlette and Pydantic). [One of the fastest Python frameworks available](#performance).
-* **Fast to code**: Increase the speed to develop features by about 200% to 300%. *
+* **Fast to code**: Increase development speed by about 200% to 300%. *
 * **Fewer bugs**: Reduce about 40% of human (developer) induced errors. *
 * **Intuitive**: Great editor support. <dfn title="also known as auto-complete, autocompletion, IntelliSense">Completion</dfn> everywhere. Less time debugging.
 * **Easy**: Designed to be easy to use and learn. Less time reading docs.