feat(ui): add anchor links to Header nav and expand FAQ block

src/payload-types.ts

@@ -989,7 +989,8 @@ export interface Header {
   id: number;
   navigation?:
     | {
-        page: number | Page;
+        page?: (number | null) | Page;
+        anchor?: string | null;
         id?: string | null;
       }[]
     | null;
@@ -1214,6 +1215,7 @@ export interface HeaderSelect<T extends boolean = true> {
     | T
     | {
         page?: T;
+        anchor?: T;
         id?: T;
       };
   updatedAt?: T;