Docs: Typo

docs/api/cameras/ArrayCamera.html

@@ -14,7 +14,7 @@
 
 		<div class="desc">
 			[name] can be used in order to efficiently render a scene with a predefined set of cameras. This is an important performance aspect for rendering VR scenes.<br />
-			Each instance of [name] has an array of sub cameras. It's mandatory to define for each sub camera the *bounds* property which determines the part of the viewport that is rendered with this camera.
+			An instance of [name] always has an array of sub cameras. It's mandatory to define for each sub camera the *bounds* property which determines the part of the viewport that is rendered with this camera.
 		</div>
 
 		<h2>Example</h2>