Update multiple-partitions.md (#189)

In line 147, updated attribute HNSWConfigDiff to HnswConfigDiff

qdrant-landing/content/documentation/tutorials/multiple-partitions.md

@@ -144,7 +144,7 @@ client = QdrantClient("localhost", port=6333)
 client.recreate_collection(
     collection_name="{collection_name}",
     vectors_config=models.VectorParams(size=768, distance=models.Distance.COSINE),
-    hnsw_config=models.HNSWConfigDiff(
+    hnsw_config=models.HnswConfigDiff(
         payload_m=16,
         m=0,
     ),
@@ -168,4 +168,4 @@ client.create_payload_index(
   field_name="group_id", 
   field_schema=models.PayloadSchemaType.KEYWORD
 )
-```
+```