Strip certain HTML tags when rendering mod pages

Some mod pages use certain tags for centering purposes, but trips up
hoedown.

Signed-off-by: Joshua Goins <josh@redstrate.com>

launcher/ui/pages/modplatform/ModPage.cpp

@@ -428,6 +428,10 @@ void ModPage::updateUi()
     text += "<hr>";
 
     HoeDown h;
+
+    // hoedown bug: it doesn't handle markdown surrounded by block tags (like center, div) so strip them
+    current.extraData.body.remove(QRegularExpression("<[^>]*(?:center|div)\\W*>"));
+
     ui->packDescription->setHtml(text + (current.extraData.body.isEmpty() ? current.description : h.process(current.extraData.body.toUtf8())));
     ui->packDescription->flush();
 }