Fix: Some typos found using codespell

src/network/network_content.cpp

@@ -133,7 +133,7 @@ bool ClientNetworkContentSocketHandler::Receive_SERVER_INFO(Packet *p)
 		ci->state = ContentInfo::UNSELECTED;
 	}
 
-	/* Something we don't have and has filesize 0 does not exist in te system */
+	/* Something we don't have and has filesize 0 does not exist in the system */
 	if (ci->state == ContentInfo::UNSELECTED && ci->filesize == 0) ci->state = ContentInfo::DOES_NOT_EXIST;
 
 	/* Do we already have a stub for this? */
@@ -774,7 +774,7 @@ void ClientNetworkContentSocketHandler::SendReceive()
 
 	if (this->CanSendReceive()) {
 		if (this->ReceivePackets()) {
-			/* Only update activity once a packet is received, instead of everytime we try it. */
+			/* Only update activity once a packet is received, instead of every time we try it. */
 			this->lastActivity = _realtime_tick;
 		}
 	}

src/network/network_content_gui.cpp

@@ -289,7 +289,7 @@ struct ContentListFilterData {
 	std::bitset<CONTENT_TYPE_END> types; ///< Content types displayed
 };
 
-/** Filter criterias for NetworkContentListWindow. */
+/** Filter criteria for NetworkContentListWindow. */
 enum ContentListFilterCriteria {
 	CONTENT_FILTER_TEXT = 0,        ///< Filter by query sting
 	CONTENT_FILTER_TYPE_OR_SELECTED,///< Filter by being of displayed type or selected for download

src/network/network_gui.cpp

@@ -238,7 +238,7 @@ protected:
 
 	int lock_offset; ///< Left offset for lock icon.
 	int blot_offset; ///< Left offset for green/yellow/red compatibility icon.
-	int flag_offset; ///< Left offset for langauge flag icon.
+	int flag_offset; ///< Left offset for language flag icon.
 
 	/**
 	 * (Re)build the GUI network game list (a.k.a. this->servers) as some

src/network/network_server.cpp

@@ -1206,7 +1206,7 @@ NetworkRecvStatus ServerNetworkGameSocketHandler::Receive_CLIENT_ACK(Packet *p)
 
 	/* The client is trying to catch up with the server */
 	if (this->status == STATUS_PRE_ACTIVE) {
-		/* The client is not yet catched up? */
+		/* The client is not yet caught up? */
 		if (frame + DAY_TICKS < _frame_counter) return NETWORK_RECV_STATUS_OKAY;
 
 		/* Now he is! Unpause the game */