Doc: Update numastat.txt

The existing numactl website is no longer working.  Change website information
of numactl/libnuma utility.  And, Rearrange tab space for readability.
Signed-off-by: Geunsik Lim <geunsik.lim@samsung.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>

Documentation/numastat.txt

@@ -7,16 +7,21 @@ All units are pages. Hugepages have separate counters.
 
 numa_hit	A process wanted to allocate memory from this node,
 		and succeeded.
+
 numa_miss	A process wanted to allocate memory from another node,
 		but ended up with memory from this node.
+
 numa_foreign	A process wanted to allocate on this node,
 		but ended up with memory from another one.
+
 local_node	A process ran on this node and got memory from it.
+
 other_node	A process ran on this node and got memory from another node.
+
 interleave_hit 	Interleaving wanted to allocate from this node
 		and succeeded.
 
 For easier reading you can use the numastat utility from the numactl package
-(ftp://ftp.suse.com/pub/people/ak/numa/numactl*). Note that it only works
+(http://oss.sgi.com/projects/libnuma/). Note that it only works
 well right now on machines with a small number of CPUs.