8347052: Update java man page documentation to reflect current state of the UseNUMA flag

Reviewed-by: ayang
Backport-of: ea774b74e819e6db607204c05fd1c8f57d508213

Author: Thomas Schatzl

src/java.base/share/man/java.md

@@ -2817,9 +2817,8 @@ Java HotSpot VM.
 `-XX:+UseNUMA`
 :   Enables performance optimization of an application on a machine with
     nonuniform memory architecture (NUMA) by increasing the application's use
-    of lower latency memory. By default, this option is disabled and no
-    optimization for NUMA is made. The option is available only when the
-    parallel garbage collector is used (`-XX:+UseParallelGC`).
+    of lower latency memory. The default value for this option depends on the
+    garbage collector.
 
 `-XX:+UseParallelGC`
 :   Enables the use of the parallel scavenge garbage collector (also known as