devices: vmwdt: Fix rustdoc::bare_urls warnings
devices: vmwdt: Fix rustdoc::bare_urls warnings

BUG=none
TEST=tools/cargo-doc

Change-Id: Ibec2c3f289f57cbabc1533a97fbfb20dbe3385ed
Reviewed-on: https://chromium-review.googlesource.com/c/crosvm/crosvm/+/3780082
Reviewed-by: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Commit-Queue: Dennis Kempin <cd09796fb571bec2782819dbfd33307f65b1c778@google.com>
Auto-Submit: Keiichi Watanabe <815e4e8f7c92a23424d7c3f51ead622bcedbc720@chromium.org>
Tested-by: Keiichi Watanabe <815e4e8f7c92a23424d7c3f51ead622bcedbc720@chromium.org>

google/crosvm,google/crosvm,google/crosvm,google/crosvm