chore: update german docs, fix links (#560)

* updated german links
* fixed links where `QingWei-Li` should've been `docsifyjs`
  * naturally excluded donate links and links to private projects like `vuep` unrelated to docsify

---

See commit for details. If you have a question, just ask.

index.html

@@ -21,7 +21,7 @@
   <script>
     window.$docsify = {
       alias: {
-        '.*?/changelog': 'https://raw.githubusercontent.com/QingWei-Li/docsify/master/CHANGELOG',
+        '.*?/changelog': 'https://raw.githubusercontent.com/docsifyjs/docsify/master/CHANGELOG',
         '/.*/_navbar.md': '/_navbar.md'
       },
       notFoundPage: '_404.html',
@@ -38,7 +38,7 @@
       plugins: [
         function (hook, vm) {
           hook.beforeEach(function (html) {
-            var url = 'https://github.com/QingWei-Li/docsify/blob/master/' + vm.route.file
+            var url = 'https://github.com/docsifyjs/docsify/blob/master/' + vm.route.file
             var editHtml = '[:memo: Edit Document](' + url + ')\n'
 
             return editHtml
@@ -54,4 +54,4 @@
   <script src="/lib/docsify.js"></script>
 </body>
 
-</html>
+</html>