Updated windows icon converter link

docs/en/manuals/windows.md

@@ -13,7 +13,7 @@ Windows specific application configuration is done from the [Windows section](/m
 
 ## Application icon
 
-The application icon used for a Windows game must be in the .ico format. You can easily create a .ico file from a .png file using an online tool such as [ICOConvert](https://icoconvert.com/). Upload an image and use the following icon sizes:
+The application icon used for a Windows game must be in the .ico format. You can easily create a .ico file from a .png file using an online tool such as [ICOConvert](https://www.icoconverter.com/). Upload an image and use the following icon sizes:
 
 ![Windows icon sizes](images/windows/windows-icon.png)
 

docs/zh/manuals/windows.md

@@ -13,7 +13,7 @@ Windows 相关设置位于*game.project* 文件的 [Windows部分](/manuals/proj
 
 ## 应用图标
 
-Windows游戏的图标要使用 .ico 格式. 你可以拿一个 .png 文件, 使用[ICOConvert](https://icoconvert.com/) 之类的在线工具生成 .ico 图标. 注意图标使用如下大小:
+Windows游戏的图标要使用 .ico 格式. 你可以拿一个 .png 文件, 使用[ICOConvert](https://www.icoconverter.com/) 之类的在线工具生成 .ico 图标. 注意图标使用如下大小:
 
 ![Windows icon sizes](images/windows/windows-icon.png)