sync opam file

Author: rr0gi

devkit.opam

@@ -1,16 +1,15 @@
 opam-version: "2.0"
 maintainer: "[email protected]"
 authors: "Ahrefs <[email protected]>"
-license: "LGPL-2.1 with OCaml linking exception"
+license: "LGPL-2.1-only with OCaml-LGPL-linking-exception"
 homepage: "https://github.com/ahrefs/devkit"
 dev-repo: "git://github.com/ahrefs/devkit.git"
 bug-reports: "https://github.com/ahrefs/devkit/issues"
 synopsis: "Development kit - general purpose library"
 build: [
   ["dune" "subst"] {pinned}
-  ["dune" "build" "-p" name "-j" jobs]
-  [make "test"] {with-test}
-  [make "doc"] {with-doc}
+  ["dune" "build" "-p" name "-j" jobs "@install" "@doc"{with-doc}]
+  ["dune" "runtest" "-p" name] {with-test}
 ]
 depends: [
   "ocaml" {>= "4.05.0"}