Clustering 3K PBMCs with Scanpy

I followed the training ‘Clustering 3K PBMCs with Scanpy’.
I could not carry out at the step ;
Computation of QC metrics
–Hands-on: Add mitochondrial gene annotation
—6.Create a new tabular file from the following

Because I could not find ‘mito’ data, I did not make
a new tabular file.