small typo

index.html

@@ -898,7 +898,7 @@ <h4>Finding a place for our server module</h4>
 			<p>
 				Somewhere within Node.js lives a module called "http", and we can
 				make use of it in our own code by requiring it and assigning
-				the result of the require to local variable.
+				the result of the require to a local variable.
 			</p>
 			<p>
 				This makes our local variable an object that carries all the