Fix doc generation

[mfedderly]

npm run docs used to build the README.md files, but that seems to not be working any more, possibly because of all of the package updates over time. There may be an issue in scripts/generate-readmes.js

[markstos]

I believe this issue is resolved. I just tested npm run docs on the master branch and it ran without error. git status shows many README.md's were updated and spot-checking one found no errors.

[smallsaucepan]

Believe this is resolved. Husky pre-commit hooks run lint-staged, which runs generate-readmes.