fix: parse H3 headers to detect deployment tabs correctly

Author: ahze

scripts/sync_docs.py

@@ -51,9 +51,9 @@ def flush():
         text = "\n".join(buffer).strip()
         if text: sections.append({"key": current_key, "title": current_title, "content": text})
     for line in content.splitlines():
-        if line.startswith("## "):
+        if line.startswith("## ") or line.startswith("### "):
             flush()
-            current_title = line[3:].strip()
+            current_title = line.lstrip("#").strip()
             current_key = current_title.lower()
             buffer = []
         else: buffer.append(line)