fix prefix, use hypher case instead of camel case

[beiwei30]

What is the purpose of the change

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Brief changelog

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Verifying this change

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[codecov-io]

Codecov Report

Merging #3143 into 2.7.0-release will increase coverage by 0.06%.
The diff coverage is 100%.

@@                 Coverage Diff                 @@
##             2.7.0-release    #3143      +/-   ##
===================================================
+ Coverage            63.57%   63.63%   +0.06%     
  Complexity              75       75              
===================================================
  Files                  651      651              
  Lines                28154    28154              
  Branches              4774     4774              
===================================================
+ Hits                 17898    17917      +19     
+ Misses                8008     7987      -21     
- Partials              2248     2250       +2

Impacted Files	Coverage Δ	Complexity Δ
...n/java/org/apache/dubbo/config/AbstractConfig.java	80.13% <100%> (ø)	0 <0> (ø)	⬇️
...in/java/org/apache/dubbo/config/ServiceConfig.java	53.64% <100%> (ø)	0 <0> (ø)	⬇️
.../src/main/java/org/apache/dubbo/rpc/RpcStatus.java	68.13% <0%> (-2.2%)	0% <0%> (ø)
...pache/dubbo/registry/support/AbstractRegistry.java	81.2% <0%> (-0.76%)	0% <0%> (ø)
...dubbo/remoting/exchange/support/DefaultFuture.java	71.81% <0%> (+0.67%)	0% <0%> (ø)	⬇️
...e/dubbo/remoting/transport/netty/NettyChannel.java	57.64% <0%> (+3.52%)	0% <0%> (ø)	⬇️
...onfig/spring/extension/SpringExtensionFactory.java	85.36% <0%> (+7.31%)	0% <0%> (ø)	⬇️
...che/dubbo/remoting/transport/mina/MinaChannel.java	53.94% <0%> (+10.52%)	0% <0%> (ø)	⬇️
...ache/dubbo/remoting/transport/AbstractChannel.java	87.5% <0%> (+12.5%)	0% <0%> (ø)	⬇️
.../apache/dubbo/qos/protocol/QosProtocolWrapper.java	82.05% <0%> (+17.94%)	0% <0%> (ø)	⬇️

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