Docs: Couple of minor typographical corrections.

docs/manual/en/introduction/Animation-system.html

@@ -24,7 +24,7 @@ <h2>Overview</h2>
 
 			To achieve all this in one homogeneous system, the three.js animation system
 			[link:https://github.com/mrdoob/three.js/issues/6881 has completely changed in 2015]
-			(be aware of outdated information!), and it has now an architecture similar to
+			(beware of outdated information!), and it has now an architecture similar to
 			Unity/Unreal Engine 4. This page gives a short overview of the main components of the
 			system and how they work together.
 

docs/manual/en/introduction/How-to-use-post-processing.html

@@ -14,7 +14,7 @@ <h1>How to use post-processing</h1>
 			Many three.js applications render their 3D objects directly to the screen. Sometimes, however, you want to apply one or more graphical
 			effects like Depth-Of-Field, Bloom, Film Grain or various types of Anti-aliasing. Post-processing is a widely used approach
 			to implement such effects. First, the scene is rendered to a render target which represents a buffer in the video card's memory.
-			In the next step one ore more post-processing passes apply filters and effects to the image buffer before it is eventually rendered to
+			In the next step one or more post-processing passes apply filters and effects to the image buffer before it is eventually rendered to
 			the screen.
 		</p>
 		<p>