fix(webhook): f-string embedded quote in href — SyntaxError L1155

backend/api/telegram_webhook.py

@@ -1152,7 +1152,7 @@ async def _cmd_git(chat_id: int, n: int = 5) -> None:
         lines.append(
             f"<code>{html.escape(_sha)}</code> {_msg}\n"
             f"  <i>{_author} · {_when}</i>  "
-            f"<a href="{_url}">diff →</a>"
+            f'<a href="{_url}">diff →</a>'
         )
 
     await _tg_reply(chat_id, "\n".join(lines), keyboard=_BACK_KB)