fix example

Author: sslotin

content/english/hpc/data-structures/binary-search.md

@@ -354,13 +354,13 @@ eytzinger:  6 3 7 1 5 8 9 0 2 4
 -->
 
 <pre class='center-pre'>
-    array:  0 1 2 3 4 5 6 7 8 9                           
-eytzinger:  <u>6</u> <u>3</u> 7 <u>1</u> 5 8 9 0 <u>2</u> 4                           
-1st range:  -------------------  k := 1                    
-2nd range:  -------------        k := 2*k     = 2   (6 ≥ 3)
-3rd range:  -------              k := 2*k     = 4   (3 ≥ 3)
-4th range:      ---              k := 2*k + 1 = 9   (1 < 3)
-5th range:        -              k := 2*k + 1 = 19  (2 < 3)
+    array:  0 1 2 3 4 5 6 7 8 9                            
+eytzinger:  <u>6</u> <u>3</u> 7 <u>1</u> 5 8 9 0 <u>2</u> 4                            
+1st range:  ------------?------  k := 2*k     = 2   (6 ≥ 3)
+2nd range:  ------?------        k := 2*k     = 4   (3 ≥ 3)
+3rd range:  --?----              k := 2*k + 1 = 9   (1 < 3)
+4th range:      ?--              k := 2*k + 1 = 19  (2 < 3)
+5th range:        !                                        
 </pre>
 
 <!-- do we need the last comparison? -->