Minor change to edXpsl.sty texttt for urlstyle url
Minor change to edXpsl.sty texttt for urlstyle url

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