fix comment ProviderError dereived -> derived
@@ -70,7 +70,7 @@ class ProviderError(LibcloudError):
Exception used when provider gives back
error response (HTTP 4xx, 5xx) for a request.
- Specific sub types can be derieved for errors like
+ Specific sub types can be derived for errors like
HTTP 401 : InvalidCredsError
HTTP 404 : NodeNotFoundError, ContainerDoesNotExistError
"""
