Fixed bullets in doc
Fixed bullets in doc


Former-commit-id: 3c32a97e358244b875f4d1d26d522003e7a74d3e
danielhers/dynet,xunzhang/dynet,clab/dynet,shuheik/dynet,danielhers/dynet,danielhers/dynet,shuheik/dynet,xunzhang/dynet,xunzhang/dynet,clab/dynet,chunyang-wen/dynet,shuheik/dynet,chunyang-wen/dynet,shuheik/dynet,clab/dynet,clab/dynet,clab/dynet,danielhers/dynet,chunyang-wen/dynet,clab/dynet,danielhers/dynet,chunyang-wen/dynet,clab/cnn,clab/cnn,danielhers/dynet,clab/cnn,danielhers/dynet,xunzhang/dynet,clab/dynet,shuheik/dynet,shuheik/dynet,shuheik/dynet