Fix typo

docs/manual/en/introduction/Drawing-lines.html

@@ -12,7 +12,7 @@
 		<div>
 			<p>
 				Let's say you want to draw a line or a circle, not a wireframe [page:Mesh].
-				First we need to setup the [page:WebGLRenderer renderer], [page:Scene scene] and camera (see the Creating a scene page).
+				First we need to set up the [page:WebGLRenderer renderer], [page:Scene scene] and camera (see the Creating a scene page).
 			</p>
 
 			<p>Here is the code that we will use:</p>