Remove unintended connections between some doctests

Author: alco

lib/elixir/lib/dict.ex

@@ -201,8 +201,7 @@ defmodule Dict do
       iex> d = HashDict.new([a: 1])
       ...> Dict.fetch!(d, :a)
       1
-      iex> d = HashDict.new([a: 1])
-      ...> Dict.fetch!(d, :b)
+      iex> Dict.fetch!(d, :b)
       ** (KeyError) key not found: :b
 
   """

lib/elixir/lib/enum.ex

@@ -372,8 +372,10 @@ defmodule Enum do
 
       iex> Enum.fetch!([2,4,6], 0)
       2
+
       iex> Enum.fetch!([2,4,6], 2)
       6
+
       iex> Enum.fetch!([2,4,6], 4)
       ** (Enum.OutOfBoundsError) out of bounds error
 

lib/elixir/lib/keyword.ex

@@ -152,6 +152,7 @@ defmodule Keyword do
 
       iex> Keyword.fetch!([a: 1], :a)
       1
+
       iex> Keyword.fetch!([a: 1], :b)
       ** (KeyError) key not found: :b
 
@@ -357,6 +358,7 @@ defmodule Keyword do
 
       iex> Keyword.update([a: 1], :a, &1 * 2)
       [a: 2]
+
       iex> Keyword.update([a: 1], :b, &1 * 2)
       ** (KeyError) key not found: :b