Update introduction-to-nodejs.md

Revise for clarity.

Signed-off-by: E <2061889+toocomputer@users.noreply.github.com>

Author: toocomputer

apps/site/pages/en/learn/getting-started/introduction-to-nodejs.md

@@ -10,7 +10,7 @@ Node.js is an open-source and cross-platform JavaScript runtime environment. It
 
 Node.js runs the V8 JavaScript engine, the core of Google Chrome, outside of the browser. This allows Node.js to be very performant.
 
-A Node.js app runs in a single process, without creating a new thread for every request. Node.js provides a set of asynchronous I/O primitives in its standard library that prevent JavaScript code from blocking and generally, libraries in Node.js are written using non-blocking paradigms, making blocking behavior the exception rather than the norm.
+A Node.js app runs in a single process, without creating a new thread for every request. Node.js provides a set of asynchronous I/O primitives in its standard library that prevent JavaScript code from blocking and libraries in Node.js are, generally, written using non-blocking paradigms, making blocking behavior the exception rather than the norm.
 
 When Node.js performs an I/O operation, like reading from the network, accessing a database or the filesystem, instead of blocking the thread and wasting CPU cycles waiting, Node.js will resume the operations when the response comes back.