Merge pull request #1421 from raphaelchaula/patch-1

Update introduction.md

Author: kamilmysliwiec

content/introduction.md

@@ -4,7 +4,7 @@ Nest (NestJS) is a framework for building efficient, scalable [Node.js](https://
 
 Under the hood, Nest makes use of robust HTTP Server frameworks like [Express](https://expressjs.com/) (the default) and optionally can be configured to use [Fastify](https://github.com/fastify/fastify) as well!
 
-Nest provides a level of abstraction above these common Node.js frameworks (Express/Fastify), but also exposes their APIs directly to the developer. This allows developers the freedom to use the myriad of third-party modules which are available for the underlying platform.
+Nest provides a level of abstraction above these common Node.js frameworks (Express/Fastify), but also exposes their APIs directly to the developer. This gives developers the freedom to use the myriad of third-party modules which are available for the underlying platform.
 
 #### Philosophy