Fix: Update README.md for installation of mlstm_kernels.

README.md

@@ -8,8 +8,10 @@ This xLSTM was pre-trained on the DCLM and selected high-quality data for in a t
 
 ## How to use it
 First, install `xlstm`, which now uses the `mlstm_kernels` package for triton kernels:
+
 ```bash
 pip install xlstm
+pip install mlstm_kernels
 ```
 
 For now, install the transformers repositiory fork from NX-AI (until it is merged):