Fixed syntax errors

docs/api/lights/DirectionalLight.html

@@ -102,7 +102,7 @@ scene.add( directionalLight );
 			The DirectionalLight points from its [page:.position position] to target.position. The default
 			position of the target is *(0, 0, 0)*.<br />
 
-			*Note*: For the the target's position to be changed to anything other than the default,
+			*Note*: For the target's position to be changed to anything other than the default,
 			it must be added to the [page:Scene scene] using
 			<code>
 				scene.add( light.target );

docs/api/lights/shadows/DirectionalLightShadow.html

@@ -13,7 +13,7 @@
 		<h1>[name]</h1>
 
 		<div class="desc">
-			This used internally by [page:DirectionalLight DirectionalLights] for calculating shadows.<br /><br />
+			This is used internally by [page:DirectionalLight DirectionalLights] for calculating shadows.<br /><br />
 
 			Unlike the other shadow classes, this uses an [page:OrthographicCamera] to calculate the shadows,
 			rather than a [page:PerspectiveCamera]. This is because light rays from a [page:DirectionalLight]

docs/api/lights/shadows/LightShadow.html

@@ -12,7 +12,7 @@
 		<h1>[name]</h1>
 
 		<div class="desc">
-			This used internally by [page:PointLight PointLights] for calculating shadows, and also serves as
+			This is used internally by [page:PointLight PointLights] for calculating shadows, and also serves as
 			a base class for the other shadow classes.
 		</div>
 
@@ -108,7 +108,7 @@ scene.add( helper );
 
 		<h3>[property:Float radius]</h3>
 		<div>
-			Setting this this to values greater than 1 will blur the edges of the shadow.<br />
+			Setting this to values greater than 1 will blur the edges of the shadow.<br />
 
 			High values will cause unwanted banding effects in the shadows - a greater [page:.mapSize mapSize]
 			will allow for a higher value to be used here before these effects become visible.<br /><br />

docs/api/lights/shadows/SpotLightShadow.html

@@ -13,7 +13,7 @@
 		<h1>[name]</h1>
 
 		<div class="desc">
-			This used internally by [page:SpotLight SpotLights] for calculating shadows.
+			This is used internally by [page:SpotLight SpotLights] for calculating shadows.
 		</div>
 
 		<h2>Example</h2>