update readme

Java/README.md

-# Gilded Rose starting position in Java
-
-## Run the Text Fixture from Command-Line
-
-```
-./gradlew -q text
-```
-
-### Specify Number of Days
-
-For e.g. 10 days:
-
-```
-./gradlew -q text --args 10
-```
+https://gitlab.ost.ch/mirio.eggmann/GildedRose-Refactoring-Kata