Fix raw_splitted mention and explicit python version in docs.

README.md

@@ -49,6 +49,9 @@ When running a training inside the container it is necessary to [increase the sh
 
 
 ## Source
+
+*Please note that nndetection requires Python 3.8+.*
+
 1. Install CUDA (>10.1) and cudnn (make sure to select [compatible versions](https://docs.nvidia.com/deeplearning/cudnn/support-matrix/index.html)!)
 2. [Optional] Depending on your GPU you might need to set `TORCH_CUDA_ARCH_LIST`, check [compute capabilities](https://developer.nvidia.com/cuda-gpus) here.
 3. Install [torch](https://pytorch.org/) (make sure to match the pytorch and CUDA versions!) (requires pytorch >1.7+) and [torchvision](https://github.com/pytorch/vision)(make sure to match the versions!).
@@ -185,7 +188,7 @@ Note: Please avoid `.` inside file names since it can influence how paths/names
 ${det_data}
     [Task000_Example]
         - dataset.yaml # dataset.json works too
-        [raw_splitted_data]
+        [raw_splitted]
             [imagesTr]
                 - case0000_0000.nii.gz # case0000 modality 0
                 - case0000_0001.nii.gz # case0000 modality 1