Fix typo in OPAM package name

Dario Teixeira · Dario Teixeira · commit c36dac27c86d · 2021-01-29T13:30:08.000+01:00
diff --git a/dune-project b/dune-project
@@ -12,6 +12,6 @@
  (name opencv)
  (synopsis "OCaml bindings for OpenCV")
  (depends
-  ctypes-foregin
+  ctypes-foreign
   (dune (>= 2.7))
   owl))
