Merge pull request bitcoin#1393 from dplusplus1024/patch-2

BIP21: Update Anchor Link

Author: jonatack

bip-0021.mediawiki

@@ -37,7 +37,7 @@ Elements of the query component may contain characters outside the valid range.
 
 === ABNF grammar ===
 
-(See also [[#Simpler syntax|a simpler representation of syntax]])
+(See also [[#simpler-syntax|a simpler representation of syntax]])
 
  bitcoinurn     = "bitcoin:" bitcoinaddress [ "?" bitcoinparams ]
  bitcoinaddress = *base58