message: docs(RELEASE): Improve formatting
diff: @@ -13,6 +13,7 @@ npm run test
  Bump `version` in `package.json`.
  +```
  version=6.0.0 # change to correct version
  git commit -m "feat(version): Bump NPM version to ${version}"
  cp LICENSE README.md package.json dist/
  @@ -20,3 +21,4 @@ cd dist
  npm publish
  git tag -m "itk.js ${version}" -s v$version HEAD
  git push --tags upstream master
  +```
  