docs/fingerprint: Add link to reference manuals
docs/fingerprint: Add link to reference manuals

BRANCH=none
BUG=none
TEST=view in gitiles

Signed-off-by: Tom Hughes <fc5c12f30a5ed2baa0581f44ee14ad1eb7b20d83@chromium.org>
Change-Id: I53ddbad8cef8bccf44df3d771b9d9e0e0f9ef928
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2429493
Commit-Queue: Yicheng Li <77a205905d8955597c069555e9569c30512f6bd8@chromium.org>
Reviewed-by: Yicheng Li <77a205905d8955597c069555e9569c30512f6bd8@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec