Yes, links look correct now
It's actually interesting that Google Chart API is proposing people to copy their Chart Api URLs and they are using vertical bars "|" (pipe characters) to separate labels and data in "illegal URLs" ( for example http://code.google.com/apis/chart/labels.html ) so URLs like
http://chart.apis.google.com/chart?cht=r&chs=200x200&chd=t:77,66,15,0,31,48,100,77|20,36,100,2,0,100&chco=FF0000,FF9900&chls=2.0,4.0,0.0|2.0,4.0,0.0&chxt=x&chxl=0:|0|45|90|135|180|225|270|315&chxr=0,0.0,360.0 should all have %7C instead of vertical bar "|"
and image URLs like http://chart.apis.google.com/chart?cht=r&chs=200x200&chd=t:77,66,15,0,31,48,100,77%7C20,36,100,2,0,100&chco=FF0000,FF9900&chls=2.0,4.0,0.0%7C2.0,4.0,0.0&chxt=x&chxl=0:%7C0%7C45%7C90%7C135%7C180%7C225%7C270%7C315&chxr=0,0.0,360.0 are converted correctly to links in moodle auto-format.
Still all modern browsers I have tested seem to be able to use and accept also "|" or backslash with cgi tex renderers...