[PATCH] Update ramdisk documentation

The default ramdisk blocksize is actually 1024, not 512 bytes.  Also fixes
up some trailing whitespace issues.
Signed-off-by: Nathan Scott <nathans@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Documentation/ramdisk.txt

@@ -51,7 +51,7 @@ default is 4096 (4 MB) (8192 (8 MB) on S390).
 	===================
 
 This parameter tells the RAM disk driver how many bytes to use per block.  The
-default is 512.
+default is 1024 (BLOCK_SIZE).
 
 
 3) Using "rdev -r"