message: Fix spelling of `-rpcservertimeout` in pruning.py
  [ci skip]
diff: @@ -131,7 +131,7 @@ class PruneTest(BitcoinTestFramework):
  # Node 2 stays connected, so it hears about the stale blocks and then reorg's when node0 reconnects
  # Stopping node 0 also clears its mempool, so it doesn't have node1's transactions to accidentally mine
  stop_node(self.nodes[0],0)
  - self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug","-rpcserverrtimeout=0", "-maxreceivebuffer=20000","-blockmaxsize=999000", "-checkblocks=5"], timewait=900)
  + self.nodes[0]=start_node(0, self.options.tmpdir, ["-debug","-rpcservertimeout=0", "-maxreceivebuffer=20000","-blockmaxsize=999000", "-checkblocks=5"], timewait=900)
  # Mine 24 blocks in node 1
  self.utxo = self.nodes[1].listunspent()
  for i in range(24):
  @@ -158,7 +158,7 @@ class PruneTest(BitcoinTestFramework):
  # Reboot node 1 to clear its mempool (hopefully make the invalidate faster)
  # Lower the block max size so we don't keep mining all our big mempool transactions (from disconnected blocks)
  stop_node(self.nodes[1],1)
  - self.nodes[1]=start_node(1, self.options.tmpdir, ["-debug","-rpcserverrtimeout=0", "-maxreceivebuffer=20000","-blockmaxsize=5000", "-checkblocks=5", "-disablesafemode"], timewait=900)
  + self.nodes[1]=start_node(1, self.options.tmpdir, ["-debug","-rpcservertimeout=0", "-maxreceivebuffer=20000","-blockmaxsize=5000", "-checkblocks=5", "-disablesafemode"], timewait=900)
  height = self.nodes[1].getblockcount()
  print("Current block height:", height)
  @@ -181,7 +181,7 @@ class PruneTest(BitcoinTestFramework):
  # Reboot node1 to clear those giant tx's from mempool
  stop_node(self.nodes[1],1)
  - self.nodes[1]=start_node(1, self.options.tmpdir, ["-debug","-rpcserverrtimeout=0", "-maxreceivebuffer=20000","-blockmaxsize=5000", "-checkblocks=5", "-disablesafemode"], timewait=900)
  + self.nodes[1]=start_node(1, self.options.tmpdir, ["-debug","-rpcservertimeout=0", "-maxreceivebuffer=20000","-blockmaxsize=5000", "-checkblocks=5", "-disablesafemode"], timewait=900)
  print("Generating new longer chain of 300 more blocks")
  self.nodes[1].generate(300)
  