Fix minor typos in docs and comments (#15068)

Author: sofiabordagorry

lib/elixir/lib/calendar/duration.ex

@@ -232,7 +232,7 @@ defmodule Duration do
   @doc """
   Adds units of given durations `d1` and `d2`.
 
-  Respects the the highest microsecond precision of the two.
+  Respects the highest microsecond precision of the two.
 
   ## Examples
 
@@ -262,7 +262,7 @@ defmodule Duration do
   @doc """
   Subtracts units of given durations `d1` and `d2`.
 
-  Respects the the highest microsecond precision of the two.
+  Respects the highest microsecond precision of the two.
 
   ## Examples
 

lib/elixir/lib/enum.ex

@@ -1253,7 +1253,7 @@ defmodule Enum do
       iex> Enum.flat_map([:a, :b, :c], fn x -> [[x]] end)
       [[:a], [:b], [:c]]
 
-  This is frequently used to to transform and filter in one pass, returning empty
+  This is frequently used to transform and filter in one pass, returning empty
   lists to exclude results:
 
       iex> Enum.flat_map([4, 0, 2, 0], fn x ->

lib/elixir/lib/module.ex

@@ -1339,7 +1339,7 @@ defmodule Module do
   @doc """
   Returns all overridable definitions in `module`.
 
-  Note a definition is included even if it was was already overridden.
+  Note a definition is included even if it was already overridden.
   You can use `defines?/2` to see if a definition exists or one is pending.
 
   This function can only be used on modules that have not yet been compiled.

lib/elixir/lib/module/types/descr.ex

@@ -284,7 +284,7 @@ defmodule Module.Types.Descr do
 
   ## Optional
 
-  # `not_set()` is a special base type that represents an not_set field in a map.
+  # `not_set()` is a special base type that represents a not_set field in a map.
   # E.g., `%{a: integer(), b: not_set(), ...}` represents a map with an integer
   # field `a` and an not_set field `b`, and possibly other fields.
   #

lib/elixir/lib/registry.ex

@@ -1610,7 +1610,7 @@ defmodule Registry do
   def __unregister__(table, match, pos) do
     key = :erlang.element(pos, match)
 
-    # We need to perform an element comparison if we have an special atom key.
+    # We need to perform an element comparison if we have a special atom key.
     if is_atom(key) and reserved_atom?(Atom.to_string(key)) do
       match = :erlang.setelement(pos, match, :_)
       guard = {:"=:=", {:element, pos, :"$_"}, {:const, key}}

lib/elixir/lib/string.ex

@@ -483,7 +483,7 @@ defmodule String do
       iex> String.split("abc", "", parts: 3)
       ["", "a", "bc"]
 
-  Splitting on an non-existing pattern returns the original string:
+  Splitting on a non-existing pattern returns the original string:
 
       iex> String.split("abc", ",")
       ["abc"]