Wording change for the log message

Co-authored-by: Adrian Sutton <adrian@symphonious.net>

besu/src/main/java/org/hyperledger/besu/cli/BesuCommand.java

@@ -1501,7 +1501,7 @@ private void detectJemalloc() {
           .ifPresentOrElse(
               present -> logger.info("Using jemalloc"),
               () ->
-                  logger.info("jemalloc not found, you could improve memory usage installing it"));
+                  logger.info("jemalloc library not found, memory usage may be reduced by installing it"));
     }
   }