Reformat plru

Also fix a typo

Signed-off-by: Anton Blanchard <anton@linux.ibm.com>

plru.vhdl

@@ -28,7 +28,7 @@ begin
 
     -- XXX Check if we can turn that into a little ROM instead that
     -- takes the tree bit vector and returns the LRU. See if it's better
-    -- in term of FPGA resouces usage...
+    -- in term of FPGA resource usage...
     get_lru: process(tree)
         variable node : node_t;
     begin
@@ -73,5 +73,3 @@ begin
         end if;
     end process;
 end;
-
-