Update docformatter version to 1.7.8

[stevenhua0320]

Problem

We want to update the docformatter version to avoid pre-commit hook error.

Proposed solution

Change this block of code

- repo: https://github.com/s-weigand/docformatter
    rev: 5757c5190d95e5449f102ace83df92e7d3b06c6c
    hooks:
      - id: docformatter
        additional_dependencies: [tomli]
        args: [--in-place, --config, ./pyproject.toml]

to

- repo: https://github.com/PyCQA/docformatter
    rev: v1.7.8
    hooks:
      - id: docformatter
        additional_dependencies: [tomli]
        args: [--in-place, --config, ./pyproject.toml]