Update FaissRM.md

Author: arnavsinghvi11

docs/api/retrieval_model_clients/FaissRM.md

@@ -40,7 +40,7 @@ The **FaissRM** module provides a retriever that uses an in-memory Faiss vector
 
 ```python
 import dspy
-from dspy.retrieve import FaissRM
+from dspy.retrieve.faiss_rm import FaissRM
 
 document_chunks = [
     "The superbowl this year was played between the San Francisco 49ers and the Kanasas City Chiefs",
@@ -59,4 +59,4 @@ frm = FaissRM(document_chunks)
 turbo = dspy.OpenAI(model="gpt-3.5-turbo")
 dspy.settings.configure(lm=turbo, rm=frm)
 print(frm(["I am in the mood for Chinese food"]))
-```
+```