fix readme following gif replacement

Author: Pierrci

README.md

@@ -12,7 +12,7 @@ The app contains a demo of the [DistilBERT](https://arxiv.org/abs/1910.01108) mo
 (97% of BERT’s performance on GLUE) fine-tuned for Question answering on the SQuAD dataset.
 It provides 48 passages from the dataset for users to choose from.
 
-![demo gif](media/distilbert_qa.gif "Demo running offline on a Samsung Galaxy S8, speed 1.5x")
+![demo gif](media/distilbert_qa.gif "Demo running offline on a Samsung Galaxy S8")
 
 ### Coming soon: GPT-2, quantization... and much more!