style(tests): опечатка форматирования req = в test_bad_requests (T1.1, #29)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/test_api.py

@@ -158,7 +158,7 @@ def test_bad_requests(hub):
     with pytest.raises(HubError) as e:
         c.get("/issues", limit="abc")
     assert e.value.status == 400
-    req =urllib.request.Request(hub["base"] + "/batches", data=b"{not json", method="POST",
+    req = urllib.request.Request(hub["base"] + "/batches", data=b"{not json", method="POST",
                                  headers={"Authorization": "Bearer " + c.token})
     with pytest.raises(urllib.error.HTTPError) as e2:
         urllib.request.urlopen(req)