Update dubbo-provider.xml

[baymaxxjf]

What is the purpose of the change

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Brief changelog

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Verifying this change

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[htynkn]

could you please provide more detail for this PR?

[baymaxxjf]

could you please provide more detail for this PR?
不修改该地址zookeeper://127.0.0.1:2181?registry-type=service会报错，

[htynkn]

introduced by 13868b9#diff-1fceec52425b4ef669f6f4ef7a316637b20cb66a2782a800042f0aadd7858244R28

[htynkn]

thanks for your contribution