Fix propType (#3012)

Was using a custom propType vs bool.

Author: dlferro

components/combobox/combobox.jsx

@@ -260,7 +260,7 @@ const propTypes = {
 			subTitle: PropTypes.string,
 			title: PropTypes.string,
 			type: PropTypes.string,
-			disabled: PropTypes.boolean,
+			disabled: PropTypes.bool,
 			tooltipContent: PropTypes.node,
 		})
 	),

components/component-docs.json

@@ -4967,8 +4967,7 @@
                                 "required": false
                             },
                             "disabled": {
-                                "name": "custom",
-                                "raw": "PropTypes.boolean",
+                                "name": "bool",
                                 "required": false
                             },
                             "tooltipContent": {