add related links

README.md

 Issue Tracker für Stratum 0-bezogene (Real-Life) To-Dos.
 
-[Follow the white rabbit.](https://gitli.stratum0.org/stratum0/TUWAT/issues)
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+[Start here.](https://gitli.stratum0.org/stratum0/TUWAT/issues)
+
+Related:
+
+* [Wiki:Projektideen](https://stratum0.org/wiki/Projektideen)
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