Fix minor grammar error in CollisionPolygon2D, CollisionPolygon3D, CollisionShape2D, and CollisionShape3D docs

Author: Susmaster64

doc/classes/CollisionPolygon2D.xml

@@ -4,7 +4,7 @@
 		A node that provides a polygon shape to a [CollisionObject2D] parent.
 	</brief_description>
 	<description>
-		A node that provides a polygon shape to a [CollisionObject2D] parent and allows to edit it. The polygon can be concave or convex. This can give a detection shape to an [Area2D], turn [PhysicsBody2D] into a solid object, or give a hollow shape to a [StaticBody2D].
+		A node that provides a polygon shape to a [CollisionObject2D] parent and allows it to be edited. The polygon can be concave or convex. This can give a detection shape to an [Area2D], turn a [PhysicsBody2D] into a solid object, or give a hollow shape to a [StaticBody2D].
 		[b]Warning:[/b] A non-uniformly scaled [CollisionPolygon2D] will likely not behave as expected. Make sure to keep its scale the same on all axes and adjust its polygon instead.
 	</description>
 	<tutorials>

doc/classes/CollisionPolygon3D.xml

@@ -4,7 +4,7 @@
 		A node that provides a thickened polygon shape (a prism) to a [CollisionObject3D] parent.
 	</brief_description>
 	<description>
-		A node that provides a thickened polygon shape (a prism) to a [CollisionObject3D] parent and allows to edit it. The polygon can be concave or convex. This can give a detection shape to an [Area3D] or turn [PhysicsBody3D] into a solid object.
+		A node that provides a thickened polygon shape (a prism) to a [CollisionObject3D] parent and allows it to be edited. The polygon can be concave or convex. This can give a detection shape to an [Area3D] or turn a [PhysicsBody3D] into a solid object.
 		[b]Warning:[/b] A non-uniformly scaled [CollisionShape3D] will likely not behave as expected. Make sure to keep its scale the same on all axes and adjust its shape resource instead.
 	</description>
 	<tutorials>

doc/classes/CollisionShape2D.xml

@@ -4,7 +4,7 @@
 		A node that provides a [Shape2D] to a [CollisionObject2D] parent.
 	</brief_description>
 	<description>
-		A node that provides a [Shape2D] to a [CollisionObject2D] parent and allows to edit it. This can give a detection shape to an [Area2D] or turn a [PhysicsBody2D] into a solid object.
+		A node that provides a [Shape2D] to a [CollisionObject2D] parent and allows it to be edited. This can give a detection shape to an [Area2D] or turn a [PhysicsBody2D] into a solid object.
 	</description>
 	<tutorials>
 		<link title="Physics introduction">$DOCS_URL/tutorials/physics/physics_introduction.html</link>

doc/classes/CollisionShape3D.xml

@@ -4,7 +4,7 @@
 		A node that provides a [Shape3D] to a [CollisionObject3D] parent.
 	</brief_description>
 	<description>
-		A node that provides a [Shape3D] to a [CollisionObject3D] parent and allows to edit it. This can give a detection shape to an [Area3D] or turn a [PhysicsBody3D] into a solid object.
+		A node that provides a [Shape3D] to a [CollisionObject3D] parent and allows it to be edited. This can give a detection shape to an [Area3D] or turn a [PhysicsBody3D] into a solid object.
 		[b]Warning:[/b] A non-uniformly scaled [CollisionShape3D] will likely not behave as expected. Make sure to keep its scale the same on all axes and adjust its [member shape] resource instead.
 	</description>
 	<tutorials>