Add missing pageTitles

Author: colepeters

app/api/cookbook/index.mjs

@@ -15,6 +15,7 @@ export async function get (req) {
       'cache-control': cacheControl,
     },
     json: {
+      pageTitle: 'Cookbook',
       navData,
     },
   }

app/api/wasm.mjs

@@ -16,6 +16,7 @@ export async function get ({ query }) {
       'cache-control': cacheControl,
     },
     json: {
+      pageTitle: 'Enhance WASM',
       thanks,
       navData,
     },

app/api/why-enhance.mjs

@@ -13,6 +13,7 @@ export async function get () {
       'cache-control': cacheControl,
     },
     json: {
+      pageTitle: 'Why Enhance?',
       navData,
     },
   }