Reformat non-core files according to eslint/prettier config

[makkoncept]

Fixes #196

Description
Files reformatted: README.md, INSTRUCTIONS.md, CODE_OF_CONDUCT.md, CONTRIBUTING.md, webpack.config.js

Checklist:

• My pull request has a descriptive title (not a vague title like Update index.md).
• My pull request targets the master branch of the repository.
• My commit messages follow best practices.
• I added tests for the changes I made (if applicable).
• I added or updated documentation (if applicable).
• I tried running the project locally and verified that there are no
  visible errors.

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