Corrected typo in button link to ToC, redundant label tag
Corrected typo in button link to ToC, redundant label tag

evheubel/latex2edx,mitocw/latex2edx,mitocw/latex2edx,jefrench/latex2edx,jefrench/latex2edx,evheubel/latex2edx,jefrench/latex2edx,mitocw/latex2edx,evheubel/latex2edx