Correct the Resource shape properties Type entry (#1415)

* Correct a minor grammar mistake

* Correct the Resource shape properties Type entry

Prior to this change, the docs incorrectly list the Type as
"AST shape reference", but as per the Description column, and the
Model (not AST) docs, as well as the Introducing Smithy IDL 2.0
blog post, this Type should be a map of strings to shape ID.

See:
* https://awslabs.github.io/smithy/2.0/spec/service-types.html#resource
* https://awslabs.github.io/smithy/2.0/spec/json-ast.html#resource-shape
* https://aws.amazon.com/blogs/developer/introducing-smithy-idl-2-0/

* Correct the Resource shape's `properties` type

It should be a map of AST shape references, as per
https://github.com/awslabs/smithy/pull/1415#discussion_r1018609584

docs/source-1.0/spec/core/json-ast.rst

@@ -65,7 +65,7 @@ a ``type`` property to define the shape type or ``apply``.
     }
 
 All entries in the ``shapes`` map can contain a ``traits`` property that
-defines the traits attached to the shape. ``traits`` is a map of where
+defines the traits attached to the shape. ``traits`` is a map where
 each key is the absolute shape ID of a trait shape and each value is
 the value to assign to the trait.
 

docs/source-2.0/spec/json-ast.rst

@@ -69,7 +69,7 @@ a ``type`` property to define the shape type or ``apply``.
     }
 
 All entries in the ``shapes`` map can contain a ``traits`` property that
-defines the traits attached to the shape. ``traits`` is a map of where
+defines the traits attached to the shape. ``traits`` is a map where
 each key is the absolute shape ID of a trait shape and each value is
 the value to assign to the trait.
 
@@ -496,7 +496,7 @@ shapes defined in JSON support the same properties as the Smithy IDL.
       - Map<String, :ref:`AST shape reference <ast-shape-reference>`>
       - Defines identifier names and shape IDs used to identify the resource.
     * - :ref:`properties <resource-properties>`
-      - :ref:`AST shape reference <ast-shape-reference>`
+      - Map<String, :ref:`AST shape reference <ast-shape-reference>`>
       - Defines a map of property string names to shape IDs that
         enumerate the properties of the resource.
     * - :ref:`create <create-lifecycle>`