Standardize Flavio Copes' resources (#6811)

books/free-programming-books-langs.md

@@ -1244,7 +1244,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 #### Express.js
 
 * [Express.js Guide](https://web.archive.org/web/20140621124403/https://leanpub.com/express/read) - Azat Mardanov
-* [The Express.js Handbook](https://flaviocopes.com/page/express-handbook/) - Flavio Copes (HTML, PDF) *(email required for PDF)*
+* [The Express.js Handbook](https://flaviocopes.com/page/express-handbook/) - Flavio Copes (PDF, EPUB, Kindle) *(email address requested)*
 
 
 #### Fastify
@@ -1274,7 +1274,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 * [Mastering Next.js](https://masteringnextjs.com)
 * [Next.js Crash Course 2021](https://www.youtube.com/watch?v=mTz0GXj8NN0) - Brad Traversy (Traversy Media)
-* [The Next.js Handbook](https://flaviocopes.com/page/nextjs-handbook/) - Flavio Copes (HTML, PDF) *(email required for PDF)*
+* [The Next.js Handbook](https://flaviocopes.com/page/nextjs-handbook/) - Flavio Copes (PDF, EPUB, Kindle) *(email address requested)*
 
 
 #### Node.js
@@ -1293,7 +1293,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 * [Node.js Succinctly, Syncfusion](https://www.syncfusion.com/resources/techportal/ebooks/nodejs) (PDF, Kindle) (email address *requested*, not required)
 * [Practical Node.js: Building Real-World Scalable Web Apps](https://github.com/azat-co/practicalnode) - Azat Mardan
 * [The Node Beginner Book](http://nodebeginner.org)
-* [The Node.js Handbook](https://flaviocopes.com/page/node-handbook/) - Flavio Copes (HTML, PDF) *(email required for PDF)*
+* [The Node.js Handbook](https://flaviocopes.com/page/node-handbook/) - Flavio Copes (PDF, EPUB, Kindle) *(email address requested)*
 
 
 #### Om
@@ -1354,7 +1354,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 
 * [30 Days Of Vue](https://www.newline.co/30-days-of-vue) - Hassan Djirdeh (HTML; *email required for PDF*)
 * [Learning Vue.js](https://riptutorial.com/Download/vue-js.pdf) (PDF)
-* [The Vue.js Handbook](https://flaviocopes.nyc3.digitaloceanspaces.com/vue-handbook/vue-handbook.pdf) - Flavio Copes (PDF)
+* [The Vue.js Handbook](https://flaviocopes.com/page/vue-handbook/) - Flavio Copes (PDF, EPUB, Kindle) *(email address requested)*
 
 
 ### Jenkins
@@ -2419,7 +2419,7 @@ That section got so big, we decided to split it into its own file, the [BY SUBJE
 #### Deno
 
 * [Deno Manual](https://deno.land/manual)
-* [FlavioCopes Deno Handbook](https://flaviocopes.com/deno) - *free PDF with registration*
+* [The Deno Handbook](https://flaviocopes.com/page/deno-handbook/) - Flavio Copes (PDF, EPUB, Kindle) *(email address requested)*
 
 
 ### Unix