Apply suggestions from code review

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

Author: mkardous-silabs

src/app/icd/server/ICDManager.cpp

@@ -249,8 +249,8 @@ bool ICDManager::CheckInWouldBeSentAtActiveModeVerifier(FabricIndex aFabricIndex
     VerifyOrReturnValue(mSubInfoProvider->SubjectHasActiveSubscription(aFabricIndex, subjectID), true);
 
 #if CHIP_CONFIG_PERSIST_SUBSCRIPTIONS
-    // At least one registration has a persisted entry. Do not send Check-In message.
-    // This is to cover the use-case where the subscription resumption feature is used with the Check-In message.
+    // If at least one registration has a persisted entry, do not send Check-In message.
+    // The resumption of the persisted subscription will serve the same function a check-in would have served.
     VerifyOrReturnValue(mSubInfoProvider->SubjectHasPersistedSubscription(aFabricIndex, subjectID), true);
 #endif // CHIP_CONFIG_PERSIST_SUBSCRIPTIONS
     return false;

src/app/icd/server/ICDManager.h

@@ -85,7 +85,7 @@ class ICDManager : public ICDListener
      *        This type can be used to implement specific verifiers that can be used in the CheckInMessagesWouldBeSent function.
      *        The goal is to avoid having multiple functions that implement the iterator loop with only the check changing.
      *
-     * @return true if at least one Check-In message wuld be sent
+     * @return true if at least one Check-In message would be sent
      *         false No Check-In messages would be sent
      */