Docs: fix broken references

src/DLL.mli

@@ -17,8 +17,8 @@ val open_ : string -> t option
     Binds {{:http://docs.libuv.org/en/v1.x/dll.html#c.uv_dlopen} [uv_dlopen]}.
     See {{:http://man7.org/linux/man-pages/man3/dlopen.3p.html} [dlopen(3p)]}.
 
-    Evaluates to [None] on failure. In that case, call {!Luv.DLL.last_error} to
-    get the error message. *)
+    Evaluates to [None] on failure. In that case, call {!Luv.DLL.error} to get
+    the error message. *)
 
 val close : t -> unit
 (** Closes a shared library.
@@ -33,8 +33,8 @@ val sym : t -> string -> nativeint option
     Binds {{:http://docs.libuv.org/en/v1.x/dll.html#c.uv_dlsym} [uv_dlsym]}. See
     {{:http://man7.org/linux/man-pages/man3/dlsym.3p.html} [dlsym(3p)]}.
 
-    Evaluates to [None] on failure. In that case, call {!Luv.DLL.last_error} to
-    get the error message. *)
+    Evaluates to [None] on failure. In that case, call {!Luv.DLL.error} to get
+    the error message. *)
 
 val error : t -> string
 (** Retrieves the last error message from {!Luv.DLL.open_} or {!Luv.DLL.sym}.

src/TCP.mli

@@ -29,7 +29,7 @@ val init :
     [uv_tcp_init_ex]}.
 
     The stream is not yet connected or listening. See {!Luv.TCP.bind},
-    {!Luv.Stream.listen}, and {!Luv.Stream.connect}.
+    {!Luv.Stream.listen}, and {!Luv.TCP.connect}.
 
     On libuv prior to 1.7.0, using [?domain] causes this function to return
     [Error `ENOSYS] ("Function not implemented").

src/file.mli

@@ -39,7 +39,7 @@
     the main thread by manually running them in a worker. This can be done in
     several ways:
 
-    - Directly using the {{!Luv.Thread.Pool} libuv thread pool}.
+    - Directly using the {{!Luv.Thread_pool} libuv thread pool}.
     - By creating a thread manually with {!Luv.Thread.create}.
     - By creating a thread manually with OCaml's standard
       {{:https://caml.inria.fr/pub/docs/manual-ocaml/libref/Thread.html}

src/pipe.mli

@@ -107,7 +107,7 @@ val receive_handle :
     calls its callback, there may be file descriptors in the pipe, in addition
     to the ordinary data provided to the callback.
 
-    To check, call this function {!Luv.Pipe.recieve_handle} in a loop until it
+    To check, call this function {!Luv.Pipe.receive_handle} in a loop until it
     returns [`None]. Each time it returns [`TCP receive] or [`Pipe receive],
     create an appropriate [handle] using either {!Luv.TCP.init} or
     {!Luv.Pipe.init}, and call [receive handle] to receive the file descriptor