Fix desktop file errors. Follow freedesktop standard.

fontweak.desktop

@@ -1,20 +1,12 @@
 [Desktop Entry]
-Categories=System;SystemSetup;
-Comment[zh_CN]=选择字体并设置字体效果
+Type=Application
+Version=1.0
+Name=Fontweak
+GenericName=Font Configuration Tool
+GenericName[zh_CN]=字体配置工具
 Comment=Configure font family and render effects
+Comment[zh_CN]=选择字体并设置字体效果
 Exec=fontweak
-GenericName[zh_CN]=字体配置
-GenericName=Font Configuration
 Icon=fontweak
-MimeType=
-Name[zh_CN]=Fontweak
-Name=Fontweak
-Path=
-StartupNotify=true
 Terminal=false
-TerminalOptions=
-Type=Application
-X-DBUS-ServiceName=
-X-DBUS-StartupType=none
-X-KDE-SubstituteUID=false
-X-KDE-Username=
+Categories=Settings;DesktopSettings;