Fix some linting issues

Determined the license is MIT

Author: Leonidas-from-XIV

packages/monadlib/monadlib.0.1/opam

@@ -1,5 +1,6 @@
 opam-version: "2.0"
 maintainer: "[email protected]"
+authors: ["Phil Scott"]
 build: [
   ["oasis" "setup"]
   ["ocaml" "setup.ml" "-configure" "--prefix" prefix]
@@ -15,7 +16,8 @@ depends: [
 ]
 dev-repo: "git+https://github.com/Chattered/ocaml-monad"
 install: ["ocaml" "setup.ml" "-install"]
-synopsis: "A starter library for monads, with transformers and applicatives."
+synopsis: "A starter library for monads, with transformers and applicatives"
+license: "MIT"
 flags: light-uninstall
 url {
   src: "https://github.com/ocaml/opam-source-archives/raw/main/monadlib-0.1.tar.gz"

packages/monadlib/monadlib.0.2/opam

@@ -20,7 +20,8 @@ depends: [
   "batteries" {>= "2.0"}
   "ocamlbuild" {build}
 ]
-synopsis: "A starter library for monads, with transformers and applicatives."
+synopsis: "A starter library for monads, with transformers and applicatives"
+license: "MIT"
 flags: light-uninstall
 url {
   src: "https://github.com/ocaml/opam-source-archives/raw/main/monadlib-0.2.tar.gz"