fix pseudo rotateky() descr

README.md

@@ -98,13 +98,15 @@ where:
     endfor
     
     func rotatekey(K, B)
-      [rotate K[32] array elementy 1 to the right]
-      for N in 0..16:
+      PREV = K[31]
+      for N in 0..31
+        NEXT = K[N]
+        K[N] = PREV 
+	PREV = NEXT
 	K[N] = KBOX[K[N] xor B]
-      endfor
+      done
     endfunc    
 
-
 where:
 
     K[17]: expanded key