BIP 54: grammar improvements #2151

  86 | @@ -88,25 +87,24 @@ the timewarp and Murch–Zawy vulnerabilities[^3]. The latter poses mostly theor
  87 |  extremely low risk to fix: the duration of an adjustment period has never been, and should never be,
  88 |  negative. The former is fixed by preventing the timestamp of the first block of a difficulty period
  89 |  from being lower than the previous block's, with a two-hour grace period. A [previous
  90 | -proposal][BIP-XXXX] to fix timewarp used a ten-minute grace period instead, also adopted for
  91 | -[testnet4][BIP94 timewarp]. Out of an abundance of caution and because it only trivially worsens the
  92 | +proposal][BIP-XXXX] to fix the timewarp attack used a ten-minute grace period instead, and this

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 102 | @@ -103,9 +103,8 @@ increases the preparation cost of an attack to make it uneconomical for a miner[
 103 |  invalid[^7].
 104 |  
 105 |  In the presence of 64-byte transactions a block header's Merkle root may be valid for different sets
 106 | -of transactions. This is because in the Merkle tree construction a 64-byte transaction may be
 107 | -interpreted as the catenation of two 32-byte hashes, or the catenation of two 32-byte hashes may be
 108 | -interpreted as a transaction. The former allows to fake a block inclusion proof and the latter makes
 109 | +of transactions. This is because, in the Merkle tree construction, a 64-byte value may be
 110 | +interpreted either as a transaction or as the concatenation of two 32-byte hashes. The former allows faking a block inclusion proof and the latter makes

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