[RAPPS-DB] Fix Anki description. (#317)

* [RAPPS-DB] Fix Anki description

Author: julenuri

anki.txt

@@ -3,7 +3,7 @@ Name = Anki
 Version = 2.0.52
 License = AGPL and BSD
 LicenseType = 1
-Description = 
+Description = Anki is a flashcard program that helps you spend more time on challenging material, and less on what you already know.
 Category = 8
 URLSite = https://apps.ankiweb.net/
 URLDownload = https://github.com/ankitects/anki/releases/download/2.0.52/anki-2.0.52-alternate.exe