Make rep_crawler_weight_minimum be a valid acceptable value

Previously the minimum value was not part of the accepted range, which
did not make much sense logically.

in practice, this change should be so small that it should insignificant.

nano/node/repcrawler.cpp

@@ -53,7 +53,7 @@ void nano::rep_crawler::validate ()
 		}
 
 		nano::uint128_t rep_weight = node.ledger.weight (vote->account);
-		if (rep_weight <= minimum)
+		if (rep_weight < minimum)
 		{
 			if (node.config.logging.rep_crawler_logging ())
 			{