Added dev doc en-HK

docs/lang/dev-en-HK/0.md

@@ -0,0 +1,9 @@
+["Developer Documentation"]
+![](img/devdoc.png)
+# Developer Documentation
+Welcome to the documentation for developers. 
+
+***If you are normal users whom want to deploy and use the system, read the standard documentation instead.***
+
+
+

docs/lang/en-HK/12.md

@@ -0,0 +1,6 @@
+["End of Documentation"]
+![](img/enddoc.png)
+# End of Documentation
+Congratulations! This is the end of the documentation.
+
+If you want to know more about the system or develop your own ArOZ Online WebApp Module, feel free to take a look at the development documentation which start with a prefix "dev-". Click ![here](index.html) to exit the documentation reader.

docs/lang/zh-HK/1.md

@@ -13,7 +13,9 @@
 ## 寫入映像檔到 SD 卡
 
 首先，你需要下載 Win32 Disk Imager 及 ArOZ Online系統 Raspberry Pi 用映像檔。下載後請按屏幕上的步驟進行安裝。
+
 [Win32 Disk Imager 傳送門](https://sourceforge.net/projects/win32diskimager/)
+
 [ArOZ Online System 映像檔傳送門](https://hkwtc.org/aroz_online/dist/)
 
 安裝完成後桌面應該會出現本圖示。雙擊圖示以打開 Win32 Disk Imager。