Doc string update

Author: alextwoods

packages/smithy-aws-core/src/smithy_aws_core/credentials_resolvers/chain.py

@@ -25,7 +25,7 @@
 class CredentialsResolverChain(
     IdentityResolver[AWSCredentialsIdentity, IdentityProperties]
 ):
-    """Resolves AWS Credentials from system environment variables."""
+    """Resolves AWS Credentials from an ordered list of credentials sources."""
 
     def __init__(
         self,

packages/smithy-aws-core/src/smithy_aws_core/credentials_resolvers/imds.py

@@ -249,4 +249,5 @@ def is_available(self, config: AwsCredentialsConfig) -> bool:
         return True
 
     def build_resolver(self, config: AwsCredentialsConfig) -> AWSCredentialsResolver:
+        # TODO: Configure lower number of retries/lower timeout
         return IMDSCredentialsResolver(http_client=config.http_client)