make the pdf title appear correctly

.github/workflows/chameleon.yml

@@ -19,15 +19,17 @@ jobs:
  sudo apt-get install pandoc weasyprint texlive-latex-base texlive-fonts-recommended texlive-extra-utils texlive-latex-extra fonts-roboto
  sudo pip install pandoc-secnos
 
+ # setting the metadata title changes the title displayed by pdf-viewers, but introduces a separate heading (which is undesired). To remove that, set the title variable to null
  - name: Build Fancy Version
  run: |
  cd ${{github.workspace}}/chameleon/manual
- pandoc *.md -o chameleon_manual.pdf --filter pandoc-secnos --pdf-engine=weasyprint --css ${{github.workspace}}/common/style_dark.css
+ pandoc *.md -o chameleon_manual.pdf --filter pandoc-secnos --pdf-engine=weasyprint --css ${{github.workspace}}/common/style_dark.css --metadata title="Chameleon" -V "title:"
 
+ # setting the metadata title changes the title displayed by pdf-viewers, but introduces a separate heading (which is undesired). To remove that, set the title variable to null
  - name: Build Print Version
  run: |
  cd ${{github.workspace}}/chameleon/manual
- pandoc *.md -o chameleon_manual_print.pdf --filter pandoc-secnos --pdf-engine=weasyprint --css ${{github.workspace}}/common/style_print.css
+ pandoc *.md -o chameleon_manual_print.pdf --filter pandoc-secnos --pdf-engine=weasyprint --css ${{github.workspace}}/common/style_print.css --metadata title="Chameleon" -V "title:"
 
  - uses: actions/upload-artifact@v4
  with: