Adding bindings to register page into redirection table

src/urls.ml

@@ -3,20 +3,15 @@
  * *)
 (* (OLD URL, NEW URL) *)
 let old_to_new =
-  (* NO EQUIVALENT *)
-  [ ( "https://www.ocamlpro.com/pre-inscription-a-une-session-de-formation-inter-entreprises/"
-    , "/" )
-  ; ("https://www.ocamlpro.com/fr/preinscription-aux-formations-ocamlpro/", "/")
-  ]
   (* LEAD TO 404 *)
-  @ [ ("https://www.ocamlpro.com/2017/05/04/opam-build", "404")
-    ; ("https://www.ocamlpro.com/2018/07/26/opam-2-0-0-rc3", "404")
-    ; ("https://files.ocamlpro.com/pub/opam-full-latest.tar.gz", "404")
-    ; ("https://files.ocamlpro.com/pub/opam-full-1.1.0.tar.gz", "404")
-    ; ("https://www.ocamlpro.com/blog/2013/03/14/opam-1.0.0.html", "404")
-    ; ("https://files.ocamlpro.com/files/tuareg-mode-with-ppx.el", "404")
-    ; ("http://ocamlpro.com/pub/ny-meetup.pdf", "404" )
-    ]
+  [ ("https://www.ocamlpro.com/2017/05/04/opam-build", "404")
+  ; ("https://www.ocamlpro.com/2018/07/26/opam-2-0-0-rc3", "404")
+  ; ("https://files.ocamlpro.com/pub/opam-full-latest.tar.gz", "404")
+  ; ("https://files.ocamlpro.com/pub/opam-full-1.1.0.tar.gz", "404")
+  ; ("https://www.ocamlpro.com/blog/2013/03/14/opam-1.0.0.html", "404")
+  ; ("https://files.ocamlpro.com/files/tuareg-mode-with-ppx.el", "404")
+  ; ("http://ocamlpro.com/pub/ny-meetup.pdf", "404" )
+  ]
   (* PAGES STATIQUES FR *)
   @ [ ("/fr/accueil/", "/index")
     ; ("/fr/accueil", "/index")
@@ -42,6 +37,7 @@ let old_to_new =
     ; ("/fr/formation-passer-a-ocaml/", "/course_ocaml_development")
     ; ("/fr/formation-optimiser-du-code-ocaml", "/course_ocaml_code_opti")
     ; ("/fr/formation-optimiser-du-code-ocaml/", "/course_ocaml_code_opti")
+    ; ("/fr/preinscription-aux-formations-ocamlpro/", "/course_register" )
     ]
   (* STATIC PAGES *)
   @ [ ("/", "/index")
@@ -63,6 +59,8 @@ let old_to_new =
     ; ("/course-ocaml-development/", "/course_ocaml_development")
     ; ("/course-ocaml-code-optimization/", "/course_ocaml_code_opti")
     ; ("/rust-vocational-training-2/", "/course_rust_vocational_training")
+    ; ("/pre-inscription-a-une-session-de-formation-inter-entreprises/"
+      , "/course_register" )
     ]
   (* AUTHORS *)
   @ [ ("/fr/author/lefessan/", "/blog/authors/fabrice_le_fessant")