forms/Sources.js

fixed a couple small errors from church's commit for ec2 tags

awx/ui/static/js/forms/Source.js

@@ -106,7 +106,7 @@ angular.module('SourceFormDefinition', [])
                     "</ul><p>If blank, all groups above are created except <em>Instance ID</em>.</p>",
                 dataContainer: 'body'
             },
-            custom_script: {
+            source_script: {
                 label :  "Custom Inventory Scripts",
                 type: 'lookup',
                 ngShow: "source && source.value !== '' && source.value === 'custom'",