The links to the modules in the GitHub repository are broken. For instance, the link for cdf_apm_base points to https://github.com/cognitedata/toolkit/blob/release/cognite_toolkit/cognite_modules/core/cdf_apm_base, which no longer exists.
The documentation containing these broken links can be found here:
https://docs.cognite.com/cdf/deploy/cdf_toolkit/references/packages/cdf_demo_infield.