Merge pull request #211 from peerplays-network/feature/BLOCKBACK-162

[BLOCKBACK-162] Fixed spelling issue in error message

libraries/chain/vesting_balance_evaluator.cpp

@@ -145,7 +145,7 @@ void_result vesting_balance_withdraw_evaluator::do_evaluate( const vesting_balan
 
    const vesting_balance_object& vbo = op.vesting_balance( d );
    FC_ASSERT( op.owner == vbo.owner, "", ("op.owner", op.owner)("vbo.owner", vbo.owner) );
-   FC_ASSERT( vbo.is_withdraw_allowed( now, op.amount ), "${balance_type} Vested Balance cannont be withdrwan during the locking period", 
+   FC_ASSERT( vbo.is_withdraw_allowed( now, op.amount ), "${balance_type} Vested Balance cannot be withdrawn during the locking period", 
          ("balance_type", get_vesting_balance_type(vbo.balance_type))("now", now)("op", op)("vbo", vbo) );
    assert( op.amount <= vbo.balance );      // is_withdraw_allowed should fail before this check is reached