message: Bump mdbook to latest version
diff: @@ -97,7 +97,7 @@ jobs:
  runs-on: ubuntu-20.04
  name: Build and Test Book
  env:
  - MDBOOK_VERSION: '0.4.2'
  + MDBOOK_VERSION: '0.4.4'
  MDBOOK_LINKCHECK_VERSION: '0.7.0'
  steps:
  - uses: actions/checkout@v2
  