Fix install & remove

Author: moatom

packages/strymonas-pure/strymonas-pure.2.1.1/opam

@@ -20,8 +20,8 @@ depends: [
 build: [
   [make "-C" "lib/" "pure"]
 ]
-install:[make "install-pure"]
-remove:[make "uninstall-pure"]
+install:[make "-C" "lib/" "install-pure"]
+remove:[make "-C" "lib/" "uninstall-pure"]
 url {
   src:
     "https://github.com/strymonas/strymonas-ocaml/archive/refs/tags/v2.1.1.tar.gz"