Fix typos (#14825)

Author: eksperimental

lib/elixir/lib/calendar/datetime.ex

@@ -1763,7 +1763,7 @@ defmodule DateTime do
 
  Although the first example shows a difference of 2 hours when
  comparing the wall clocks of the given datetime with the returned one,
- due to the "spring forward" time jump, the actual ellapsed time is
+ due to the "spring forward" time jump, the actual elapsed time is
  still exactly of 1 hour.
 
  In case you don't want these changes to happen automatically or you

lib/elixir/lib/module.ex

@@ -565,7 +565,7 @@ defmodule Module do
  written to disk, and therefore raising does not effectively halt compilation
  and may leave unused artifacts on disk. If you must raise, use `@after_compile`
  or other callback. Given modules have already been compiled, functions in
- ths module, such as `get_attribute/2`, which expect modules to not have been
+ this module, such as `get_attribute/2`, which expect modules to not have been
  yet compiled, do not work on `@after_verify` callback.
 
  Accepts a module or a `{module, function_name}` tuple. The function