Fix typo

Author: seunghun1ee

etc/kayobe/stackhpc-monitoring.yml

@@ -55,7 +55,7 @@ redfish_exporter_target_address: "{{ ipmi_address }}"
 ###############################################################################
 
 # Whether the RADOS gateway usage exporter is enabled.
-# Enabling this will result in templating radosge_usage_exporter endpoint as
+# Enabling this will result in templating radosgw_usage_exporter endpoint as
 # Prometheus scrape targets during deployment.
 stackhpc_enable_radosgw_usage_exporter: false