Update pipeline/outputs/elasticsearch.md

Signed-off-by: Lynette  Miles <[email protected]>

Author: esmerel

pipeline/outputs/elasticsearch.md

@@ -63,7 +63,7 @@ If you have used a common relational database, the parameters `index` and `type`
 
 The Elasticsearch output plugin supports TLS/SSL. For more details about the properties available and general configuration, see [TLS/SSL](../../administration/transport-security.md).
 
-### AWS Sigv4 Authentication and Upstream Servers
+### AWS Sigv4 authentication and Upstream servers
 
 The `http_proxy`, `no_proxy`, and `TLS` parameters used for AWS Sigv4 Authentication (for connection of plugin to AWS to generate authentication signature) are never picked from the `NODE` section of the [Upstream](../../administration/configuring-fluent-bit/classic-mode/upstream-servers.md) configuration. However, `TLS` parameters for connection of the plugin to Elasticsearch can be overridden in the `NODE` section of Upstream, even if AWS authentication is used.