update some documentation

src/Episode3/DataIndex.hh

@@ -31,7 +31,7 @@ enum BehaviorFlag {
   ENABLE_STATUS_MESSAGES = 0x00000010,
   LOAD_CARD_TEXT         = 0x00000020,
   ENABLE_RECORDING       = 0x00000040,
-  ENABLE_MASKING         = 0x00000080,
+  DISABLE_MASKING        = 0x00000080,
 };
 
 

src/Episode3/Server.cc

@@ -149,7 +149,7 @@ void Server::send(const void* data, size_t size) const {
   }
 
   string masked_data;
-  if (this->base()->data_index->behavior_flags & BehaviorFlag::ENABLE_MASKING) {
+  if (!(this->base()->data_index->behavior_flags & BehaviorFlag::DISABLE_MASKING)) {
     if (size >= 8) {
       masked_data.assign(reinterpret_cast<const char*>(data), size);
       uint8_t mask_key = (random_object<uint32_t>() % 0xFF) + 1;