awsIamType (#215) (#217)

(cherry picked from commit 180e50e)

Author: mayaraman19

source/atlasdatabaseuser-custom-resource.txt

@@ -294,7 +294,7 @@ specification with |aws| |iam|.
          databaseName: "admin"
      projectRef:
        name: my-project
-    awsIAMType: USER
+    awsIamType: USER
 
 Parameters
 ----------
@@ -306,7 +306,7 @@ see the |service| :oas-atlas-op:`Database Users API
 these descriptions, the available examples, and the |api| documentation 
 to customize your specifications.
 
-.. setting:: spec.awsIAMType
+.. setting:: spec.awsIamType
 
    *Type*: string