fix invalid <ul> and <li> tags in toc.html
fix invalid <ul> and <li> tags in toc.html

kmuto/review,masawada/review,kdmsnr/review,orangain/review,kmuto/review,murashitas/review,orangain/review,suzuki/review,kmuto/review,krororo/review,murashitas/review,kuad9/review_study,takahashim/review,krororo/review,kuad9/review_study,masawada/review,krororo/review,takahashim/review,suzuki/review