Fix invalid icon name

Template Setup for KDE/travis.yml.desktop: error: value "application/x-yaml" for key "Icon" in group "Desktop Entry" looks like a relative path, instead of being an absolute path to an icon or an icon name

Signed-off-by: 林博仁(Buo-ren Lin) <Buo.Ren.Lin@gmail.com>

Author: brlin-tw

Template Setup for KDE/travis.yml.desktop

@@ -1,6 +1,6 @@
 [Desktop Entry]
 Name=.travis.yml
 Type=Link
-Icon=application/x-yaml
+Icon=application-x-yaml
 URL=travis.yml
 # Comment=