Mention the Node2D shearing property in Matrices and transforms

This closes #3604.

tutorials/math/matrices_and_transforms.rst

@@ -235,7 +235,7 @@ Putting it all together
 ~~~~~~~~~~~~~~~~~~~~~~~
 
 We're going to apply everything we mentioned so far onto one transform.
-To follow along, create a simple project with a Sprite node and use the 
+To follow along, create a simple project with a Sprite node and use the
 Godot logo for the texture resource.
 
 Let's set the translation to (350, 150), rotate by -0.5 rad, and scale by 3.
@@ -284,13 +284,15 @@ Shearing the transformation matrix (advanced)
           explores an uncommonly used aspect of transformation matrices
           for the purpose of building an understanding of them.
 
+          Node2D provides a shearing property out of the box.
+
 You may have noticed that a transform has more degrees of freedom than
 the combination of the above actions. The basis of a 2D transformation
 matrix has four total numbers in two :ref:`class_Vector2` values, while
 a rotation value and a Vector2 for scale only has 3 numbers. The high-level
 concept for the missing degree of freedom is called *shearing*.
 
-Normally you will always have the basis vectors perpendicular to each
+Normally, you will always have the basis vectors perpendicular to each
 other. However, shearing can be useful in some situations, and
 understanding shearing helps you understand how transforms work.