fix: typo correction

[zgs225]

What this PR does:

Which issue(s) this PR fixes:
Fixes #

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[AlexStocks]

@zgs225 the github apollo config unit test case failed, pls fix it.

ok  	dubbo.apache.org/dubbo-go/v3/config_center	0.006s	coverage: 9.1% of statements
2022-06-08T11:23:11.802Z	INFO	apollo/impl.go:70	[Apollo ConfigCenter] New Apollo ConfigCenter with Configuration: &{AppID:testApplication_yang Cluster:dev NamespaceName:mockDubbogo.yaml IP:http://127.0.0.1:37699/ NextTryConnTime:0 IsBackupConfig:true BackupConfigPath: Secret:}, url = apollo://127.0.0.1:37699?config-center.appId=testApplication_yang&config-center.cluster=dev&config-center.group=&config-center.namespace=mockDubbogo.yaml&config-center.timeout=&remote-client-name=dubbo.config-center-apollo-106.12.25.204%3A8080
2022-06-08T11:23:11.803Z	INFO	apollo/impl.go:70	[Apollo ConfigCenter] New Apollo ConfigCenter with Configuration: &{AppID:testApplication_yang Cluster:dev NamespaceName:mockDubbogo.yaml IP:http://127.0.0.1:37193/ NextTryConnTime:0 IsBackupConfig:true BackupConfigPath: Secret:}, url = apollo://127.0.0.1:37193?config-center.appId=testApplication_yang&config-center.cluster=dev&config-center.group=&config-center.namespace=mockDubbogo.yaml&config-center.timeout=&remote-client-name=dubbo.config-center-apollo-106.12.25.204%3A8080
2022-06-08T11:23:11.804Z	INFO	apollo/impl.go:70	[Apollo ConfigCenter] New Apollo ConfigCenter with Configuration: &{AppID:testApplication_yang Cluster:dev NamespaceName:mockDubbogo.yaml IP:http://127.0.0.1:37649/ NextTryConnTime:0 IsBackupConfig:true BackupConfigPath: Secret:}, url = apollo://127.0.0.1:37649?config-center.appId=testApplication_yang&config-center.cluster=dev&config-center.group=&config-center.namespace=mockDubbogo.yaml&config-center.timeout=&remote-client-name=dubbo.config-center-apollo-106.12.25.204%3A8080
panic: sync: negative WaitGroup counter
goroutine 131 [running]:
sync.(*WaitGroup).Add(0xc0002891d0, 0xffffffffffffffff)
	/opt/hostedtoolcache/go/1.15.15/x64/src/sync/waitgroup.go:74 +0x147
sync.(*WaitGroup).Done(...)
	/opt/hostedtoolcache/go/1.15.15/x64/src/sync/waitgroup.go:99
dubbo.apache.org/dubbo-go/v3/config_center/apollo.(*apolloDataListener).Process(0xc0002891d0, 0xc0005d2c00)
	/home/runner/work/dubbo-go/dubbo-go/config_center/apollo/impl_test.go:213 +0x45
dubbo.apache.org/dubbo-go/v3/config_center/apollo.(*apolloListener).OnNewestChange(0xc000010300, 0xc00011dac0)
	/home/runner/work/dubbo-go/dubbo-go/config_center/apollo/listener.go:58 +0x12d
created by github.com/zouyx/agollo/v3/storage.pushNewestChanges.func1
	/home/runner/go/pkg/mod/github.com/zouyx/agollo/v3@v3.4.5/storage/change_event.go:112 +0x4c
FAIL	dubbo.apache.org/dubbo-go/v3/config_center/apollo	2.025s

[zgs225]

It seems like internal error which occurs randomly. Could you help to re-run the action?

@zgs225 the github apollo config unit test case failed, pls fix it.

ok  	dubbo.apache.org/dubbo-go/v3/config_center	0.006s	coverage: 9.1% of statements
2022-06-08T11:23:11.802Z	INFO	apollo/impl.go:70	[Apollo ConfigCenter] New Apollo ConfigCenter with Configuration: &{AppID:testApplication_yang Cluster:dev NamespaceName:mockDubbogo.yaml IP:http://127.0.0.1:37699/ NextTryConnTime:0 IsBackupConfig:true BackupConfigPath: Secret:}, url = apollo://127.0.0.1:37699?config-center.appId=testApplication_yang&config-center.cluster=dev&config-center.group=&config-center.namespace=mockDubbogo.yaml&config-center.timeout=&remote-client-name=dubbo.config-center-apollo-106.12.25.204%3A8080
2022-06-08T11:23:11.803Z	INFO	apollo/impl.go:70	[Apollo ConfigCenter] New Apollo ConfigCenter with Configuration: &{AppID:testApplication_yang Cluster:dev NamespaceName:mockDubbogo.yaml IP:http://127.0.0.1:37193/ NextTryConnTime:0 IsBackupConfig:true BackupConfigPath: Secret:}, url = apollo://127.0.0.1:37193?config-center.appId=testApplication_yang&config-center.cluster=dev&config-center.group=&config-center.namespace=mockDubbogo.yaml&config-center.timeout=&remote-client-name=dubbo.config-center-apollo-106.12.25.204%3A8080
2022-06-08T11:23:11.804Z	INFO	apollo/impl.go:70	[Apollo ConfigCenter] New Apollo ConfigCenter with Configuration: &{AppID:testApplication_yang Cluster:dev NamespaceName:mockDubbogo.yaml IP:http://127.0.0.1:37649/ NextTryConnTime:0 IsBackupConfig:true BackupConfigPath: Secret:}, url = apollo://127.0.0.1:37649?config-center.appId=testApplication_yang&config-center.cluster=dev&config-center.group=&config-center.namespace=mockDubbogo.yaml&config-center.timeout=&remote-client-name=dubbo.config-center-apollo-106.12.25.204%3A8080
panic: sync: negative WaitGroup counter
goroutine 131 [running]:
sync.(*WaitGroup).Add(0xc0002891d0, 0xffffffffffffffff)
	/opt/hostedtoolcache/go/1.15.15/x64/src/sync/waitgroup.go:74 +0x147
sync.(*WaitGroup).Done(...)
	/opt/hostedtoolcache/go/1.15.15/x64/src/sync/waitgroup.go:99
dubbo.apache.org/dubbo-go/v3/config_center/apollo.(*apolloDataListener).Process(0xc0002891d0, 0xc0005d2c00)
	/home/runner/work/dubbo-go/dubbo-go/config_center/apollo/impl_test.go:213 +0x45
dubbo.apache.org/dubbo-go/v3/config_center/apollo.(*apolloListener).OnNewestChange(0xc000010300, 0xc00011dac0)
	/home/runner/work/dubbo-go/dubbo-go/config_center/apollo/listener.go:58 +0x12d
created by github.com/zouyx/agollo/v3/storage.pushNewestChanges.func1
	/home/runner/go/pkg/mod/github.com/zouyx/agollo/v3@v3.4.5/storage/change_event.go:112 +0x4c
FAIL	dubbo.apache.org/dubbo-go/v3/config_center/apollo	2.025s

[codecov-commenter]

Codecov Report

Merging #1924 (6c4d14b) into 3.0 (07defad) will decrease coverage by 0.09%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##              3.0    #1924      +/-   ##
==========================================
- Coverage   45.02%   44.92%   -0.10%     
==========================================
  Files         287      287              
  Lines       17135    17135              
==========================================
- Hits         7715     7698      -17     
- Misses       8606     8623      +17     
  Partials      814      814              

Impacted Files	Coverage Δ
config/reference_config.go	31.97% <0.00%> (ø)
filter/metrics/filter.go	85.00% <0.00%> (-15.00%)	⬇️
metadata/report/delegate/delegate_report.go	26.49% <0.00%> (-7.95%)	⬇️
...tocol/rest/server/server_impl/go_restful_server.go	41.37% <0.00%> (-3.45%)	⬇️

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