Docs: Make it simple.

docs/api/en/math/Vector2.html

@@ -334,7 +334,7 @@
 
 		<h3>[method:this random]()</h3>
 		<p>
-			Sets the x and y components of this vector to a pseudo-random value between 0 and 1, excluding 1.
+			Sets each component of this vector to a pseudo-random value between 0 and 1, excluding 1.
 		</p>
 
 		<h2>Source</h2>

docs/api/en/math/Vector3.html

@@ -439,7 +439,7 @@
 
 		<h3>[method:this random]()</h3>
 		<p>
-			Sets the x, y and z components of this vector to a pseudo-random value between 0 and 1, excluding 1.
+			Sets each component of this vector to a pseudo-random value between 0 and 1, excluding 1.
 		</p>
 
 		<h2>Source</h2>

docs/api/en/math/Vector4.html

@@ -325,7 +325,7 @@
 
 		<h3>[method:this random]()</h3>
 		<p>
-			Sets the x, y, z and w components of this vector to a pseudo-random value between 0 and 1, excluding 1.
+			Sets each component of this vector to a pseudo-random value between 0 and 1, excluding 1.
 		</p>
 
 		<h2>Source</h2>

docs/api/zh/math/Vector2.html

@@ -335,7 +335,7 @@
 
 		<h3>[method:this random]()</h3>
 		<p>
-			Sets the x and y components of this vector to a pseudo-random value between 0 and 1, excluding 1.
+			Sets each component of this vector to a pseudo-random value between 0 and 1, excluding 1.
 		</p>
 
 		<h2>源代码</h2>

docs/api/zh/math/Vector3.html

@@ -428,7 +428,7 @@
 
 		<h3>[method:this random]()</h3>
 		<p>
-			Sets the x, y and z components of this vector to a pseudo-random value between 0 and 1, excluding 1.
+			Sets each component of this vector to a pseudo-random value between 0 and 1, excluding 1.
 		</p>
 
 		<h2>源代码</h2>

docs/api/zh/math/Vector4.html

@@ -324,7 +324,7 @@
 
 		<h3>[method:this random]()</h3>
 		<p>
-			Sets the x, y, z and w components of this vector to a pseudo-random value between 0 and 1, excluding 1.
+			Sets each component of this vector to a pseudo-random value between 0 and 1, excluding 1.
 		</p>
 
 		<h2>源代码</h2>