Fix JVM flag misconfiguration(-D-XX -> -XX)

[bearded-cat]

If the intention was to have this option active, using the -XX: would be appropriate.

$ java -XX:+PrintFlagsFinal -D-XX:SoftRefLRUPolicyMSPerMB=36000 -version | grep SoftRef
     intx SoftRefLRUPolicyMSPerMB                  = 1000                                      {product} {default}

$ java -XX:+PrintFlagsFinal -XX:SoftRefLRUPolicyMSPerMB=36000 -version | grep SoftRef
     intx SoftRefLRUPolicyMSPerMB                  = 36000                                     {product} {command line}