Address feedback (thanks HansGlimmerfors)

Author: SergioInToronto

lib/cachex.ex

@@ -566,25 +566,25 @@ defmodule Cachex do
   to lazily generate a value on cache miss. Conceptually similar to a
   read-through cache.
 
-  Cachex will store any value `fallback` returns. If you want more
+  Normally Cache stores the value returned by `fallback`. If you want more
   control, return a Tuple like `{:commit, value}` or `{:ignore, value}`.
-  Passing `:ignore` instructs Cachex to not store the value.
+  Passing `:ignore` instructs Cachex not to store the value.
 
   You may provide a third element in a `:commit` Tuple, to specify options the
   same as you would in `put/4`.
 
+  `fallback` optionally takes argument `key`.
+
   Multiple calls to `fetch/4` with the same key while the `fallback` is running
   will wait on the lazy evaluation to complete. Multiple instances of
   `fallback` will never run concurrently for a given key.
 
-  `fallback` optionally receives `key` as an argument.
-
   ## Examples
 
-      iex> Cachex.fetch(:my_cache, "key", fn -> "default" end)
-      { :commit, "default" }
-      iex> Cachex.fetch(:my_cache, "key", fn -> "default" end)
-      { :ok, "default" }
+      iex> Cachex.fetch(:my_cache, "key", fn -> "value" end)
+      { :commit, "value" }
+      iex> Cachex.fetch(:my_cache, "key", fn -> "value" end)
+      { :ok, "value" }
 
       iex> Cachex.fetch(:my_cache, "missing_key", fn(key) ->
       ...>   { :ignore, String.reverse(key) }