Apply comment suggestions from code review

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

Author: ksperling-apple

src/app/ReadClient.cpp

@@ -462,7 +462,7 @@ CHIP_ERROR ReadClient::GenerateDataVersionFilterList(DataVersionFilterIBs::Build
                                                      const Span<DataVersionFilter> & aDataVersionFilters,
                                                      bool & aEncodedDataVersionList)
 {
-    // Give the callback a chance first, otherwise use the list we have.
+    // Give the callback a chance first, otherwise use the list we have, if any.
     ReturnErrorOnFailure(
         mpCallback.OnUpdateDataVersionFilterList(aDataVersionFilterIBsBuilder, aAttributePaths, aEncodedDataVersionList));
 

src/app/ReadClient.h

@@ -339,7 +339,7 @@ class ReadClient : public Messaging::ExchangeDelegate
      *  This will send either a Read Request or a Subscribe Request depending on
      *  the InteractionType this read client was initialized with.
      *
-     *  If the requests contains more data version filters than can fit in the request packet
+     *  If the params contain more data version filters than can fit in the request packet
      *  the list will be truncated as needed, i.e. filter inclusion is on a best effort basis.
      *
      *  @retval #others fail to send read request