Fixed comment.

Author: jburhenn

src/CayenneUtils/CayenneDefines.h

@@ -28,7 +28,7 @@ ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEAL
 #endif
 
 #ifndef CAYENNE_MAX_PAYLOAD_SIZE
-#define CAYENNE_MAX_PAYLOAD_SIZE 64 // Redefine this for different message size
+#define CAYENNE_MAX_PAYLOAD_SIZE 64 // Redefine this for different payload size
 #endif
 
 #ifndef CAYENNE_MAX_MESSAGE_HANDLERS