Add docs site to opam metadata

Author: jonludlam

odoc-parser.opam

@@ -14,7 +14,7 @@ bug-reports: "https://github.com/ocaml-doc/odoc-parser/issues"
 dev-repo: "git+https://github.com/ocaml-doc/odoc-parser.git"
 # This template exists because without it dune pop is dependencies and build rules
 # involving odoc. Since odoc depends on this package, this doesn't work.
-
+doc: "https://ocaml-doc.github.io/odoc-parser/"
 depends: [
   "dune" {>= "2.8"}
   "ocaml" {>= "4.02.0"}

odoc-parser.opam.template

@@ -1,6 +1,6 @@
 # This template exists because without it dune pop is dependencies and build rules
 # involving odoc. Since odoc depends on this package, this doesn't work.
-
+doc: "https://ocaml-doc.github.io/odoc-parser/"
 depends: [
   "dune" {>= "2.8"}
   "ocaml" {>= "4.02.0"}