chore: inline the doc of the included modules

src/core/CCMap.mli

@@ -16,6 +16,7 @@ module type OrderedType = Map.OrderedType
 
 module type S = sig
   include Map.S
+  (** @inline *)
 
   val get : key -> 'a t -> 'a option
   (** [get k m] returns [Some v] if the current binding of [k] in [m] is [v],

src/core/CCNativeint.mli

@@ -18,6 +18,7 @@
 include module type of struct
   include Nativeint
 end
+(** @inline *)
 
 val min : t -> t -> t
 (** [min x y] returns the minimum of the two integers [x] and [y].

src/core/CCOption.mli

@@ -6,6 +6,7 @@
    @since 3.6 *)
 
 include module type of Option
+(** @inline *)
 
 val map_or : default:'b -> ('a -> 'b) -> 'a t -> 'b
 (** [map_or ~default f o] is [f x] if [o = Some x], [default] otherwise.

src/core/CCPair.mli

@@ -5,6 +5,7 @@
 [@@@ifge 5.4]
 
 include module type of Pair
+(** @inline *)
 
 [@@@else_]
 

src/core/CCResult.mli

@@ -17,6 +17,7 @@ type 'a printer = Format.formatter -> 'a -> unit
 (** {2 Basics} *)
 
 include module type of Result
+(** @inline *)
 
 val return : 'a -> ('a, 'err) t
 (** Successfully return a value. *)