update endpoint url

app.py

@@ -28,7 +28,7 @@ async def fetch_similar_datasets(dataset_id: str, limit: int = 10) -> List[Dict]
 async def fetch_similar_datasets_by_text(query: str, limit: int = 10) -> List[Dict]:
     async with httpx.AsyncClient() as client:
         response = await client.post(
-            f"{API_URL}_by_text", params={"query": query, "n": limit + 1}
+            f"{API_URL}-by-text", params={"query": query, "n": limit + 1}
         )
         if response.status_code == 200:
             results = response.json()["results"]