chore: update all plugins.md, fixed docsifyjs#187

Author: QingWei-Li

docs/de-de/plugins.md

@@ -91,12 +91,18 @@ Wenn das Skript auf der Seite ein externes ist (eine Javascript Datei über das
 
 ## Bilder zoomen
 
-Medium's Bilderzoom. Basierend auf [zoom-image](https://github.com/egoist/zoom-image).
+Medium's Bilderzoom. Basierend auf [medium-zoom](https://github.com/francoischalifour/medium-zoom).
 
 ```html
 <script src="//unpkg.com/docsify/lib/plugins/zoom-image.min.js"></script>
 ```
 
+Exclude the special image
+
+```markdown
+![](image.png ':no-zoom')
+```
+
 ## Edit on github
 
 Add `Edit on github` button on every pages. provided by 3rd party, check [document](https://github.com/njleonzhang/docsify-edit-on-github)

docs/zh-cn/plugins.md

@@ -85,13 +85,21 @@
 
 ## 图片缩放 - Zoom image
 
-Medium's 风格的图片缩放插件. 基于 [zoom-image](https://github.com/egoist/zoom-image)。
+Medium's 风格的图片缩放插件. 基于 [medium-zoom](https://github.com/francoischalifour/medium-zoom)。
 
 ```html
 <script src="//unpkg.com/docsify/lib/plugins/zoom-image.js"></script>
 ```
 
 
+忽略某张图片
+
+```markdown
+![](image.png ':no-zoom')
+```
+
+
+
 ## Edit on github
 
 Add `Edit on github` button on every pages. provided by 3rd party, check [document](https://github.com/njleonzhang/docsify-edit-on-github)