Adding the script

update_doc.py

@@ -0,0 +1,24 @@
+import subprocess
+import argparse
+
+
+def main():
+    parser = argparse.ArgumentParser()
+    parser.add_argument("--check", action="store_true")
+
+    args = parser.parse_args()
+
+    output = subprocess.check_output(["text-generation-launcher", "--help"]).decode("utf-8")
+    final_doc = f"```\n{output}\n```"
+
+    if args.check:
+        with open("docs/source/basic_tutorials/launcher.md", "r") as f:
+            doc = f.read()
+            if doc != final_doc:
+                raise Exception("Doc is not up-to-date, run `python update_doc.py` in order to update it")
+    else:
+        with open("docs/source/basic_tutorials/launcher.md", "w") as f:
+            f.write(final_doc)
+
+if __name__ == "__main__":
+    main()