[web] symbols not working (typo)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23385 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e
[web] symbols not working (typo)

git-svn-id: http://dev.geogebra.org/svn/trunk/geogebra@23388 23ce0884-8a58-47d3-bc5c-ddf1cd5b9f9e