remove redundant description for debug procedure, instead using link.

[fujitatomoya]

• Please check if the PR fulfills these requirements

• The commit message follows our guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

Which issue(s) this PR fixes:

Fixes part of kubeedge/kubeedge#6030, in particular kubeedge/kubeedge#6030 (comment)

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)

Removes redundant debug procedure and explanation, keep the up-to-date procedure and use ref links instead.

• What is the current behavior? (You can also link to an open issue here)

Redundant documentation increases the maintenance cost.

• What is the new behavior (if this is a feature change)?

Keep the latest information and using links instead.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this PR?)

Not at all.

• Other information:

N.A

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[fujitatomoya]

@1Shubham7 since you seems to be interested in documentation development and enhancement, i could use some review from you?

[fujitatomoya]

I gotta ask for some help for Chinese version. i tried to do the same fixes in there, but not 100% sure that i did that properly.

[1Shubham7]

Hey @fujitatomoya, I just like contributing to the project as much as I can (these days I am not getting time to make code contributions). I plan to contribute more to code and not docs but I have reviewed this one : )
(only the english version part)