Added comment to 73

Author: mattpocock

src/08-advanced-patterns/68-hoc.solution.tsx

@@ -1,7 +1,7 @@
 import { Router, useRouter } from "fake-external-lib";
 
 export const withRouter = <TProps extends { router: Router }>(
-  Component: React.ComponentType<TProps>,
+  Component: React.FC<TProps>,
 ) => {
   const NewComponent = (props: Omit<TProps, "router">) => {
     const router = useRouter();

src/08-advanced-patterns/73-as-prop-with-forward-ref.problem.tsx

@@ -6,6 +6,13 @@ import {
 } from "react";
 import { Equal, Expect } from "../helpers/type-utils";
 
+/**
+ * FYI - this solution took me the best part of a whole day to find,
+ * and the help of several TS experts in the community.
+ *
+ * So, don't feel bad if you don't find it at all.
+ */
+
 export const UnwrappedLink = <T extends ElementType>(
   props: {
     as?: T;