Fix citation author in subset README

pointerbench-pro/README.md

@@ -188,7 +188,7 @@ excluded from any training set built from the same generator. See
 ```bibtex
 @misc{pointerbench_pro_2026,
   title  = {Pointerbench-Pro: A GUI Grounding Benchmark for Professional Software},
-  author = {Pointerbench-Pro contributors},
+  author = {Maximilian Schilling and Warmwind AG},
   year   = {2026},
   url    = {https://github.com/warmwindOS/pointerbench}
 }