summary: add administration/aws-credentials

Author: iandrewt

SUMMARY.md

@@ -60,6 +60,7 @@
     * [Configuration File](administration/configuring-fluent-bit/yaml/configuration-file.md)
   * [Unit Sizes](administration/configuring-fluent-bit/unit-sizes.md)
   * [Multiline Parsing](administration/configuring-fluent-bit/multiline-parsing.md)
+* [AWS Credentials](administration/aws-credentials.md)
 * [Transport Security](administration/transport-security.md)
 * [Buffering & Storage](administration/buffering-and-storage.md)
 * [Backpressure](administration/backpressure.md)