add: Deno tutorial (#4769)

* add Deno tutorial

* fix: no-url-trailing-slash

free-programming-books-zh.md

@@ -506,6 +506,11 @@
   * [楚狂人的D3教程](http://www.cnblogs.com/winleisure/tag/D3.js/)
 
 
+#### Deno
+
+  * [Deno 钻研之术](https://deno-tutorial.js.org)
+
+
 #### Electron.js
 
   * [Electron 中文文档](https://wizardforcel.gitbooks.io/electron-doc/content) - WizardForcel