README: fix Winograd transform notation
README: fix Winograd transform notation
convercraft/NNPACK,Maratyszcza/NNPACK,microblink/NNPACK,microblink/NNPACK,convercraft/NNPACK,microblink/NNPACK,Maratyszcza/NNPACK,convercraft/NNPACK,microblink/NNPACK,convercraft/NNPACK,Maratyszcza/NNPACK,Maratyszcza/NNPACK