Update _includes/activate-deactivate-native-metrics.rst

Co-authored-by: Aunsh Chaudhari <[email protected]>

Author: aurbiztondo-splunk

_includes/activate-deactivate-native-metrics.rst

@@ -30,7 +30,7 @@ The following is an example of host metrics receiver configuration with activate
 Billing
 ---------------------------------------------
 
-* If you're in a MTS-based subscriptions, all metrics count towards metrics usage.
+* If you're in a MTS-based subscription, all metrics count towards metrics usage.
 * If you're in a host-based plan, metrics listed on this document are considered default and are included free of charge.
 
 Learn more at :ref:`monitor-imm-billing-usage`.