Rewording docstring

Co-authored-by: Tanjona Rabemananjara <rrabeman@nikhef.nl>

n3fit/src/n3fit/backends/keras_backend/MetaModel.py

@@ -438,7 +438,7 @@ def is_stacked_single_replicas(layer):
 def get_layer_replica_weights(layer, i_replica: int):
     """
     Get the weights for the given single replica ``i_replica``,
-    from a ``layer`` that has weights for all replicas.
+    from a ``layer`` that contains the weights of all the replicas.
 
     Note that the layer could be  a complete NN with many separated sub_layers
     each of which containing weights for all replicas together.