Typo fix in comment for getrawtransaction

Author: PierreRochard

bitcoin/rpc.py

@@ -315,7 +315,7 @@ def getrawtransaction(self, txid, verbose=False):
 
         Raises IndexError if transaction not found.
 
-        verbse - If true a dict is returned instead with additional information
+        verbose - If true a dict is returned instead with additional information
                  on the transaction.
 
         Note that if all txouts are spent and the transaction index is not