Apply suggestions from code review

Co-authored-by: Jean Klingler <[email protected]>

Author: josevalim

lib/elixir/lib/calendar/iso.ex

@@ -1233,7 +1233,7 @@ defmodule Calendar.ISO do
   @doc """
   Converts the given time into a iodata.
 
-  See time_to_string/5 for more information
+  See `time_to_string/5` for more information.
 
   ## Examples
 
@@ -1330,7 +1330,7 @@ defmodule Calendar.ISO do
   @doc """
   Converts the given date into a iodata.
 
-  See date_to_string/4 for more information
+  See `date_to_string/4` for more information.
 
   ## Examples
 
@@ -1410,7 +1410,7 @@ defmodule Calendar.ISO do
   @doc """
   Converts the given naive_datetime into a iodata.
 
-  See naive_datetime_to_iodata/8 for more information
+  See `naive_datetime_to_iodata/8` for more information.
 
   ## Examples
 
@@ -1535,7 +1535,7 @@ defmodule Calendar.ISO do
   @doc """
   Converts the given datetime into a iodata.
 
-  See datetime_to_iodata/12 for more information
+  See `datetime_to_iodata/12` for more information.
 
   ## Examples