bugfix: fix the typos in trpc-jave-demo's yaml

[gbccccc]

When trying to run the ClientTest of trpc-java-demo, I got the following error

java.lang.IllegalStateException: Yaml config parse exception, position(client->service), interface name is com.tencent.trpc.demo.proto.GreeterserviceAPI
        at com.tencent.trpc.container.config.yaml.BackendConfigParser.loadClass(BackendConfigParser.java:86) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.container.config.yaml.BackendConfigParser.lambda$parseConfig$0(BackendConfigParser.java:70) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]     
        at java.util.Optional.map(Optional.java:260) ~[?:?]
        at com.tencent.trpc.core.utils.BinderUtils.bind(BinderUtils.java:160) ~[trpc-core-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.core.utils.BinderUtils.bind(BinderUtils.java:144) ~[trpc-core-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.container.config.yaml.BackendConfigParser.parseConfig(BackendConfigParser.java:69) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197) ~[?:?]
        at java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1625) ~[?:?]
        at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509) ~[?:?]
        at java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499) ~[?:?]
        at java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921) ~[?:?]
        at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) ~[?:?]
        at java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682) ~[?:?]
        at com.tencent.trpc.container.config.yaml.BackendConfigParser.parseConfigMap(BackendConfigParser.java:47) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.container.config.yaml.ClientConfigParser.parseClientConfig(ClientConfigParser.java:42) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.container.config.ApplicationConfigParser.doParse(ApplicationConfigParser.java:86) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.container.config.ApplicationConfigParser.parse(ApplicationConfigParser.java:41) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.container.container.DefaultContainer.start(DefaultContainer.java:37) ~[trpc-container-default-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.server.container.TRPC.start(TRPC.java:32) [trpc-server-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.server.main.Main.main(Main.java:36) [trpc-server-1.4.0-SNAPSHOT.jar:?]
        at com.tencent.trpc.demo.example.yaml.ClientTest.main(ClientTest.java:32) [classes/:?]
        at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:279) [exec-maven-plugin-3.1.0.jar:?]
        at java.lang.Thread.run(Thread.java:842) [?:?]

After checking, I found some typos for interface names in trpc_java_client.yaml. The interface names don't match those defined in the demo.proto

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 70.13154%. Comparing base (33f8bfb) to head (6f7b00a).

Additional details and impacted files

@@                  Coverage Diff                  @@
##                master         #82         +/-   ##
=====================================================
- Coverage     70.21339%   70.13154%   -0.08186%     
+ Complexity        4253        4240         -13     
=====================================================
  Files              437         437                 
  Lines            17105       17105                 
  Branches          1727        1727                 
=====================================================
- Hits             12010       11996         -14     
- Misses            3986        3993          +7     
- Partials          1109        1116          +7     

see 10 files with indirect coverage changes

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[gbccccc]

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