Fix desktop file

--- cr3qt/src/desktop/cr3.desktop
+++ cr3qt/src/desktop/cr3.desktop
@@ -8,11 +8,13 @@ GenericName[hu]=E-könyv olvasó
 GenericName[pl]=Czytnik e-booków
 GenericName[ru]=Чтение электронных книг
 GenericName[zh]=电子书阅读器
+Comment=E-book reader
+Comment[ru]=Программа для чтения электронных книг
 TryExec=cr3
 Exec=cr3 %F
 StartupNotify=true
 Terminal=false
 Type=Application
-Icon=cr3.png
-Categories=Office;Viewer;Literature;
+Icon=cr3
+Categories=Office;Viewer;
 MimeType=application/epub+zip;application/x-fictionbook+xml;application/x-zip-compressed-fb2;text/html;application/xhtml+xml;text/plain;application/x-psion-compressed-text;application/rtf;application/zip;application/x-chm;