Merge #21394: [doc] Improve comment about protected peers

ebde946a52 [doc] Improve comment about protected peers (Amiti Uttarwar)

Pull request description:

  The comment currently suggests a long-standing node would infrequently protect peers under normal circumstances. Clarify that we also protect peers that are synced to the same work as our chain tip. [Relevant check here](ee0dc02c6f/src/net_processing.cpp (L1997)).

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  Empact:
    ACK ebde946a52
  jnewbery:
    ACK ebde946a52

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fanquake 2021-03-12 12:50:22 +08:00
commit a13a8cd8e3
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@ -557,7 +557,7 @@ struct CNodeState {
* - its connection type is IsBlockOnlyConn() == false
* - it gave us a valid connecting header
* - we haven't reached MAX_OUTBOUND_PEERS_TO_PROTECT_FROM_DISCONNECT yet
* - it has a better chain than we have
* - its chain tip has at least as much work as ours
*
* CHAIN_SYNC_TIMEOUT: if a peer's best known block has less work than our tip,
* set a timeout CHAIN_SYNC_TIMEOUT seconds in the future: