update: docs and formatUpdated.

Author: Koooooo-7

docs/write-a-plugin.md

@@ -75,6 +75,8 @@ window.$docsify = {
 
 ```js
 window.$docsify = {
+  // The date template pattern
+  formatUpdated: '{YYYY}/{MM}/{DD} {HH}:{mm}',
   plugins: [
     function(hook, vm) {
       hook.beforeEach(function(html) {

index.html

@@ -77,6 +77,7 @@
           },
           pathNamespaces: ['/es', '/de-de', '/ru-ru', '/zh-cn']
         },
+        formatUpdated: '{YYYY}/{MM}/{DD} {HH}:{mm}',
         plugins: [
           DocsifyCarbon.create('CEBI6KQE', 'docsifyjsorg'),
           function(hook, vm) {
@@ -98,6 +99,8 @@
               return (
                 editHtml +
                 html +
+                '\n----\n' +
+                'Last modified {docsify-updated}' +
                 '\n\n----\n\n' +
                 '<a href="https://docsify.js.org" target="_blank" style="color: inherit; font-weight: normal; text-decoration: none;">Powered by docsify</a>'
               );