added entry for netket

mkdocs.yml

@@ -171,6 +171,7 @@ nav:
       - Intel Trace Analyzer and Collector: software/intel/intel-suite/intel-trace-analyzer-and-collector.md
     - Machine Learning:
       - Introduction: software/machine-learning/introduction.md
+      - NetKet: software/machine-learning/netket.md
       - TensorFlow: software/machine-learning/tensorflow.md
     - MPI:
       - Introduction: software/mpi/mpi.md