docs: updating guides to provide more clarity around moderator (#628)

packages/exchange/src/exchange/providers/bedrock.py

@@ -119,7 +119,7 @@ class AwsClient(httpx.Client):
         credential_scope = f"{date_stamp}/{self.region}/{service}/aws4_request"
         string_to_sign = (
             f"{algorithm}\n{amz_date}\n{credential_scope}\n"
-            f'{hashlib.sha256(canonical_request.encode("utf-8")).hexdigest()}'
+            f"{hashlib.sha256(canonical_request.encode('utf-8')).hexdigest()}"
         )
 
         # Create the signing key

packages/exchange/tests/test_summarizer.py

@@ -75,9 +75,9 @@ def test_context_summarizer_rewrite(exchange_instance: Exchange, summarizer_inst
 
     # Ensure roles alternate in the output
     for i in range(1, len(exchange_instance.messages)):
-        assert (
-            exchange_instance.messages[i - 1].role != exchange_instance.messages[i].role
-        ), "Messages must alternate between user and assistant"
+        assert exchange_instance.messages[i - 1].role != exchange_instance.messages[i].role, (
+            "Messages must alternate between user and assistant"
+        )
 
 
 MESSAGE_SEQUENCE = [