dd: fix example in a comment. No code changes.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
diff --git a/coreutils/dd.c b/coreutils/dd.c
index 1732a5c..d6aa5ef 100644
--- a/coreutils/dd.c
+++ b/coreutils/dd.c
@@ -382,7 +382,7 @@
 		}
 		if (flags & FLAG_SWAB) {
 			/* If n is odd, last byte is not swapped:
-			 *  echo -n "qwe" | dd conv=swab bs=1
+			 *  echo -n "qwe" | dd conv=swab
 			 * prints "wqe".
 			 * The code does not handle correctly odd-sized reads
 			 * in the *middle* of the input. FIXME.