Fix typo in S3Boto3Storage documentation
There is a typo in the documentation which incorrectly states `AWS_S3_SECRET_KEY_ID` instead of `AWS_S3_SECRET_ACCESS_KEY` as the proper settings configuration.
@@ -32,7 +32,7 @@ There are several different methods for specifying the AWS credentials used to c
searches for them:
#. ``AWS_S3_SESSION_PROFILE``
-#. ``AWS_S3_ACCESS_KEY_ID`` and ``AWS_S3_SECRET_KEY_ID``
+#. ``AWS_S3_ACCESS_KEY_ID`` and ``AWS_S3_SECRET_ACCESS_KEY``
#. ``AWS_ACCESS_KEY_ID`` and ``AWS_SECRET_ACCESS_KEY``
#. The environment variables AWS_S3_ACCESS_KEY_ID and AWS_S3_SECRET_ACCESS_KEY
#. The environment variables AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY
