Fix a typo in the opam file for LtacProf 8.5
Fix a typo in the opam file for LtacProf 8.5

Now the file it refers to actually exists.
gmalecha/opam-coq-archive,gmalecha/opam-coq-archive,gmalecha/opam-coq-archive,ybertot/opam-coq-archive,mattam82/coq-opam-archive,ybertot/opam-coq-archive,mattam82/coq-opam-archive,mattam82/coq-opam-archive,ybertot/opam-coq-archive,coq/opam-coq-archive