docs/bpf: Add missing BPF program types to docs

Update the table of program types in the libbpf documentation with the
recently added program types.

Signed-off-by: Donald Hunter <donald.hunter@gmail.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240912095944.6386-1-donald.hunter@gmail.com