Broken link in MLDA example notebook

[cluhmann]

Notebook title: The MLDA sampler Notebook url: https://www.pymc.io/projects/examples/en/latest/samplers/MLDA_simple_linear_regression.html

Issue description

The notebook contains this text:

The model is similar to the one used in https://docs.pymc.io/notebooks/GLM-linear.html.

But the URL is not a link and is non-operational.

Proposed solution

The linking explanatiion/guidance found here should be used to appropriately use sphinx links to the relevnat notebook.