Update src/app/tests/TestICDManager.cpp

Co-authored-by: mkardous-silabs <84793247+mkardous-silabs@users.noreply.github.com>

Author: lpbeliveau-silabs

src/app/tests/TestICDManager.cpp

@@ -551,7 +551,7 @@ class TestICDManager
         // Verify That ICDManager starts in Idle
         NL_TEST_ASSERT(aSuite, ctx->mICDManager.mOperationalState == ICDManager::OperationalState::IdleMode);
 
-        // Trigger a subscription report Put the ICD manager into active mode
+        // Trigger a subscription report. Put the ICD manager into active mode.
         notifier.NotifySubscriptionReport();
         NL_TEST_ASSERT(aSuite, ctx->mICDManager.mOperationalState == ICDManager::OperationalState::ActiveMode);