[css-transforms-2] Remove duplicate definition of transformation matrix in favor of more complete one.

Author: dbaron

css-transforms-2/Overview.bs

@@ -194,14 +194,6 @@ Three-dimensional transform functions conceptually extend the coordinate space i
 
 </div>
 
-<p id="transformation-matrix-computation">
-	With 3D transforms, the Z component of 'transform-origin' affects the result, so the <a>transformation matrix</a> is computed from the 'transform' and 'transform-origin' properties as follows:
-
-	1. Start with the identity matrix.
-	2. Translate by the computed X, Y and Z of 'transform-origin'
-	3. Multiply by each of the transform functions in 'transform' property from left to right
-	4. Translate by the negated computed X, Y and Z values of 'transform-origin'
-
 3D Transform Rendering {#3d-transform-rendering}
 ----------------------
 
@@ -781,6 +773,7 @@ serialization must take this into account:
 Current Transformation Matrix {#ctm}
 ====================================
 
+<p id="transformation-matrix-computation">
 The <a>transformation matrix</a> computation is amended to the following:
 
 The transformation matrix is computed from the 'transform', 'transform-origin', 'translate', 'rotate', 'scale', and 'offset' properties as follows: