readme: mention Flair ;)

README.md

@@ -34,7 +34,7 @@ The pretraining took 5.4 days and the TensorBoard can be found [here](../../tens
 
 GERTuraX-3 was tested on GermEval 2014 (NER), GermEval 2018 (Sentiment analysis), CoNLL-2003 (NER) and on the ScandEval benchmark.
 
-We use the same hyper-parameters for GermEval 2014, GermEval 2018 and CoNLL-2003 as used in the [GeBERTa](https://arxiv.org/abs/2310.07321) paper (cf. Table 5) using 5 runs with different seed and report the averaged score.
+We use the same hyper-parameters for GermEval 2014, GermEval 2018 and CoNLL-2003 as used in the [GeBERTa](https://arxiv.org/abs/2310.07321) paper (cf. Table 5) using 5 runs with different seed and report the averaged score, conducted with the awesome Flair library.
 
 ## GermEval 2014