Don't need to specify tar -j; it can autodetect

Author: maxkapur

fetch_python_docs.py

@@ -35,7 +35,7 @@
     if (outdir / "index.html").is_file():
         print(f"{outdir}/index.html already exists")
     else:
-        subprocess.run(["tar", "vxjf", outfile], cwd=HERE).check_returncode()
+        subprocess.run(["tar", "vxf", outfile], cwd=HERE).check_returncode()
 
     if parsed.serve:
         # Use a different port from 8000 to avoid conflicting with other