Actually, that one is a meta pacakge not the actual kernel.
The exact one to download depends on the CPU architecture. Normally the
package manager will figure that out automatically but since they're doing it
manually:
For 64-bit:
https://linux-libre.fsfla.org/pub/linux-libre/freesh/pool/main/l/linux-upstream/linux-image-4.1.36-gnu_4.1.36-gnu-1.0_amd64.deb
For 32-bit:
https://linux-libre.fsfla.org/pub/linux-libre/freesh/pool/main/l/linux-upstream/linux-image-4.1.36-gnu.pae_4.1.36-gnu-1.0_i386.deb
For 32-bit without support for PAE:
https://linux-libre.fsfla.org/pub/linux-libre/freesh/pool/main/l/linux-upstream/linux-image-4.1.36-gnu.nonpae_4.1.36-gnu-1.0_i386.deb
Once the kernel is installed and the computer is restarted it's important to
then go and set up the repository as indicated in the directions on the
website and install one of the meta packages listed. This is important. ***If
you don't do this you won't get updates. Ever.***
