code: def link_markdown_cells(cells, modules):
      "Create documentation links for all cells in markdown with backticks."
      for i, cell in enumerate(cells):
          if cell['cell_type'] == 'markdown':
              cell['source'] = link_docstring(modules, cell['source']f link_markdown_cells(cells, modules):
      "Create documentation links for all cells in markdown with backticks."
      for i, cell in enumerate(cells):
          if cell['cell_type'] == 'markdown':
              cell['source'] = link_docstring(modules, cell['source'])
docs: Create documentation links for all cells in markdown with backticks.