Manifold examples have confusing/missleading comment

[willdady]

Four of the manifold examples have the following comment:

# You can also set the pipelines that are available in this pipeline.
# Set manifold to True if you want to use this pipeline as a manifold.
# Manifold pipelines can have multiple pipelines.
self.type = "manifold"

The second line of the comment implies self.manifold = True which conflicts with the actual setting self.type = "manifold".