Tighten the checks that match stray text

Every page holds foo in its footer element, the foo+bar row holds bar,
the branch switcher holds master, and commit 1 and file-1 also match
commits 10 to 19 and file-10 to file-19. A search page repeats its term
in the search box. So these checks passed on pages that lacked what
they look for, and each now matches the link itself.

0 files changed, 0 insertions, 0 deletions