Update WeaviateRM.md (#1898)

* Update WeaviateRM.md

Edited docs to reflect Weaviate client

* Update WeaviateRM.md

Added the same line somewhere else

docs/docs/deep-dive/retrieval_models_clients/WeaviateRM.md

@@ -13,7 +13,7 @@ An example of the WeaviateRM constructor:
 
 ```python
 WeaviateRM(
-    collection_name: str
+    weaviate_collection_name: str
     weaviate_client: str,
     k: int = 5
 )
@@ -44,7 +44,7 @@ from dspy.retrieve.weaviate_rm import WeaviateRM
 weaviate_client = weaviate.connect_to_embedded() # you can also use local or WCD
 
 retriever_model = WeaviateRM(
-    collection_name="<WEAVIATE_COLLECTION>",
+    weaviate_collection_name="<WEAVIATE_COLLECTION>",
     weaviate_client=weaviate_client 
 )