make -C src run: No rule to make target 'run'

[serpent7776]

When I try to run make -C src run I get

gmake: Entering directory '/mnt/work/opam2web/src'
gmake: *** No rule to make target 'run'.  Stop.
gmake: Leaving directory '/mnt/work/opam2web/src'

I'm running this on FreeBSD, so gmake is the same as make on linux.
In fact, there's no makefile in src directory.

[rjbou]

Seems that the documentation hasn't been updated since a long time. it's obsolete