Remove junk from links in markdown manual.

manual/filter.lua

@@ -0,0 +1,5 @@
+function Link(el)
+  el.attributes['reference-type'] = nil
+  el.attributes['reference'] = nil
+  return el
+end

manual/latex2md.sh

@@ -8,5 +8,5 @@ sed -i -e 's@\\shift@Shift@g' _tmp.tex
 sed -i -e 's@\\Alt@Alt@g' _tmp.tex
 sed -i -e 's@\\del@Delete@g' _tmp.tex
 
-pandoc --wrap=none --reference-location=block --number-sections -s _tmp.tex -o tracy.md
+pandoc --wrap=none --reference-location=block --number-sections -L filter.lua -s _tmp.tex -o tracy.md
 rm -f _tmp.tex