Update src/darwin/Framework/CHIP/MTRMetricKeys.h

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

Author: anush-apple

src/darwin/Framework/CHIP/MTRMetricKeys.h

@@ -88,7 +88,7 @@ constexpr Tracing::MetricKey kMetricBLEDevicesRemoved = "dwnfw_ble_devices_remov
 // Unexpected C quality attribute update outside of priming
 constexpr Tracing::MetricKey kMetricUnexpectedCQualityUpdate = "dwnpm_bad_c_attr_update";
 
-// Setup from darwin MTRDevice for initial subscrption to a device
+// Setup from darwin MTRDevice for initial subscription to a device
 constexpr Tracing::MetricKey kMetricMTRDeviceInitialSubscriptionSetup = "dwnpm_dev_initial_subscription_setup";
 
 } // namespace DarwinFramework