test: fix wrong LCOV comment start tag
test: fix wrong LCOV comment start tag

I accidentally used the wrong LCOV tag for a code block

BRANCH=none
BUG=none
TEST=Not needed, comment change only

Signed-off-by: Yuval Peress <50dc11c009bd4d7e9d9d15a383c1743ce5ee82ef@google.com>
Change-Id: I522eefa28900a2f74fd51496a430e395764431d8
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3572853
Reviewed-by: Jack Rosenthal <d3f605bef1867f59845d4ce6e4f83b8dc9e4e0ae@chromium.org>
Reviewed-by: Jeremy Bettis <4df7b5147fee087dca33c181f288ee7dbf56e022@chromium.org>

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