[texdoc] texdoc -l context

[Karl Berry]

Hi Manuel,

texdoc -l context reports:

 1 /home/texlive/karl/Master/texmf-dist/doc/latex/circuitikz/context.pdf
 2 /home/texlive/karl/Master/texmf-dist/doc/context/third/context-top-ten/cmds.pdf
   = The document itself
 [...]

I see that the circuitikz "document" (actually a figure) matches the
name exactly, but the reality is that it should be ignored, since it has
nothing to do with ConTeXt.

Thanks,
karl