Escape pipe characters in learning objectives content

Author: Snooz82

tools/gen_numbering.py

@@ -255,7 +255,8 @@ def replace_link(match):
             anchor[v[1]] = f'{v[0]}#{v[-1]}'
     lo_md_lines = ["# Learning Objectives\n", '| ID | K-Level | Content |\n', '| --- | --- | --- |\n']
     for lo_id, k_level, lo_content in sorted_lo:
-        lo_md_lines.append(f'| [`LO-{lo_id}`]({anchor.get(lo_id.split("-")[0])}) | {k_level} | {lo_content.replace("|", "\\|")} |{line_break}')
+        escaped_lo_content = lo_content.replace("|", "\\|")
+        lo_md_lines.append(f'| [`LO-{lo_id}`]({anchor.get(lo_id.split("-")[0])}) | {k_level} | {escaped_lo_content} |{line_break}')
     lo_md_content = "".join(lo_md_lines)
     if write_if_changed(learning_objectives_path, lo_md_content, label=rel_label(learning_objectives_path)):
         modified_paths.add(learning_objectives_path.resolve())