[DOC] some possible language errors and example errors in the v5.0 version document

[Koado]

Language Errors

1. Domain Model > Topic > Behavior constraints:
   
   
   advised to change these sentences to:
   1.1 Consistent message types. The messages that...
   1.2 Only one type of messages sent to a topic. The messages that...
   1.3 消息类型必须一致：发送的消息的类型必须和目标主题定义的消息类型一致。。。
   1.4 主题类型必须单一：每个主题只支持一种消息类型，不允许将多种类型的消息发送到同一个主题中。。。

2. 功能特性 > 消息发送重试和流控机制 > 背景信息:
   
   There is an extra space between the letters M and Q.

3. Feature Behavior > Message Filtering > Attribute-based SQL filtering:
   
   
   Use '/' instead of ''.

4. Feature Behavior > Consumer Load Balancing > Message-based load balancing:
   
   
   advised to change these sentences to:
   4.1 More balanced consumption allocation. In conventional queue-based load...
   4.2 More forgiving to differences in networking capacities. In an online production...
   4.3 Easier O&M for queue allocation. In scenarios where conventional...
   4.4 消费分摊更均衡：对于传统队列级的负载均衡策略，如果。。。
   4.5 对非对等消费者更友好：在线上生产环境中，由于。。。
   4.6 队列分配运维更方便：传统基于绑定队列的负载均衡策略必须保证。。。

5. 领域模型 > 队列 > 使用建议:
   
   空轮询一词容易产生误解，空轮询多指Java NIO在Linux环境下的epoll bug，此处也许可以修改为：队列过多对应更多的轮询请求，增加系统负荷。

Example Errors

1. Feature Behavior > Normal Message > Example:

sh mqadmin updateTopic -n <nameserver_address> -t <topic_name> -c <cluster_name> -a +message.type=Normal

# Normal -> NORMAL (case sensitive)

2. Feature Behavior > Ordered Message > Example:

./bin/mqadmin updateTopic -c DefaultCluster -t FIFOTopic -o true -n 127.0.0.1:9876

# lack -a +message.type=FIFO

[Koado]

Languages Errors：
3. Use '/' instead of '\'.