fixed RST link format
fixed RST link format

Former-commit-id: d3436fd69d992745f6fa4c2f85f9869cc2f4f904 [formerly 47256eeccc707790cf5cf72eba595417a77fda0b]
Former-commit-id: 4c92b075bad035e75d42f56b1f2ab8ee9901b6a1
kensugino/jGEM