Readability enhancementfor telnate related changes

[khanimteyaz]

Enhancing readbility as part of remaining stuff from PR https://github.com/apache/incubator-dubbo/pull/3013/files.

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• I have checked the FAQ of this repository and believe that this is not a duplicate.

Environment

• Dubbo version: xxx
• Operating System version: xxx
• Java version: xxx

Steps to reproduce this issue

1. xxx
2. xxx
3. xxx

Pls. provide [GitHub address] to reproduce this issue.

Expected Result

What do you expected from the above steps？

Actual Result

What actually happens?

Enhancing readability of code as part of PR https://github.com/apache/incubator-dubbo/pull/3013/files

[khanimteyaz]

I am on it.

[carryxyh]

Since your pr has been merged, I will close this issue.
Thx for your contribution!