update the tidb configuration documents. (#4056)#4103

Merged

TomShawn merged 1 commit intopingcap:release-4.0from ti-srebot:release-4.0-a56535720ce5

Oct 28, 2020

+15

Commits on Oct 28, 2020

cherry pick pingcap#4056 to release-4.0

tangwz
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