Fix relative link in guestbook/README.md (#41)
Fix relative link in guestbook/README.md (#41)

Signed-off-by: Ahmet Alp Balkan <c786c8527fd6be7431bb94ca48b6f76cc06787cc@google.com>
kubernetes/examples,kubernetes/examples,kubernetes/examples,kubernetes/examples,kubernetes/examples,kubernetes/examples,kubernetes/examples,kubernetes/examples