chore(nav): a missing bit of metadata for the forms guide

Author: naomiblack

public/docs/ts/latest/guide/_data.json

@@ -29,6 +29,14 @@
     "basics": true
   },
 
+  "forms": {
+    "title": "Forms",
+    "intro": "A form creates a cohesive, effective, and compelling data entry experience. An Angular form coordinates a set of data-bound user controls, tracks changes, validates input, and presents errors.",
+    "nextable": true,
+    "basics": true,
+    "hide": true
+  },
+
   "forms-deprecated": {
     "title": "Forms",
     "intro": "A form creates a cohesive, effective, and compelling data entry experience. An Angular form coordinates a set of data-bound user controls, tracks changes, validates input, and presents errors.",