Restore docformatter in pre-commit

[cyschneck]

Currently, docformatter is throwing an error when building. Will be added back to pre-commit when the v1.7.6 version is released

Removed in #115

build attempt 1...
    => error
    An error has occurred: InvalidManifestError: 
    ==> File /pc/clone/jNZWZVRSTLq-4hbwuef7PA/.pre-commit-hooks.yaml
    ==> At Hook(id='docformatter-venv')
    ==> At key: language
    =====> Expected one of conda, coursier, dart, docker, docker_image, dotnet, fail, golang, haskell, lua, node, perl, pygrep, python, r, ruby, rust, script, swift, system but got: 'python_venv'
    Check the log at /pc/pre-commit.log
build attempt 2...
    => error
    An error has occurred: InvalidManifestError: 
    ==> File /pc/clone/jNZWZVRSTLq-4hbwuef7PA/.pre-commit-hooks.yaml
    ==> At Hook(id='docformatter-venv')
    ==> At key: language
    =====> Expected one of conda, coursier, dart, docker, docker_image, dotnet, fail, golang, haskell, lua, node, perl, pygrep, python, r, ruby, rust, script, swift, system but got: 'python_venv'
    Check the log at /pc/pre-commit.log

Related to NCAR/geocat-examples#619