Oh I forgot to update hashlib.rst

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot ARM64 MacOS M1 Refleaks NoGIL 3.x (tier-2) has failed when building commit ee65ebd.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/1368/builds/3296) and take a look at the build logs.
4. Check if the failure is related to this commit (ee65ebd) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/1368/builds/3296

Failed tests:

• test.test_concurrent_futures.test_interpreter_pool

Failed subtests:

• test_free_reference - test.test_concurrent_futures.test_interpreter_pool.InterpreterPoolExecutorTest.test_free_reference

Test leaking resources:

• test_interpreter_pool: memory blocks

Summary of the results of the build (if available):

==

Traceback (most recent call last):
  File "/Users/ec2-user/buildbot/buildarea/3.x.itamaro-macos-arm64-aws.macos-with-brew.refleak.nogil/build/Lib/test/test_concurrent_futures/executor.py", line 220, in test_free_reference
    for _ in support.sleeping_retry(support.SHORT_TIMEOUT):
             ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/ec2-user/buildbot/buildarea/3.x.itamaro-macos-arm64-aws.macos-with-brew.refleak.nogil/build/Lib/test/support/__init__.py", line 2590, in sleeping_retry
    for _ in busy_retry(timeout, err_msg, error=error):
             ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/ec2-user/buildbot/buildarea/3.x.itamaro-macos-arm64-aws.macos-with-brew.refleak.nogil/build/Lib/test/support/__init__.py", line 2560, in busy_retry
    raise AssertionError(msg)
AssertionError: timeout (67.9 seconds)