improve layout of 1993/leo/index.html

Improved indenting of information in a code block.

Ran `bin/readme2index.sh -v 1 1993/leo` to perform the above.

1993/leo/README.md

@@ -74,15 +74,15 @@ Please don't type ^D at the prompt!!
 ```
     $ ./leo
     (1296): 6433
-    ?? 12       # one 3 is a bull, another is a cow, and 4 is a cow
+    ?? 12       	# one 3 is a bull, another is a cow, and 4 is a cow
     (160): 5363
-    ?? 02       # both 3's are cows
+    ?? 02       	# both 3's are cows
     (21): 4231
-    ?? 22       # 2 and 3 are bulls, 4 and 1 are cows
+    ?? 22       	# 2 and 3 are bulls, 4 and 1 are cows
     (2): 4132
-    ?? 13       # 3 is a bull; 1, 2 and 4 are cows
+    ?? 13       	# 3 is a bull; 1, 2 and 4 are cows
     (1): 1234
-    ?? 40       # you may enter everything there
+    ?? 40       	# you may enter everything there
 ```
 
 ##### EXAMPLE: Guess the computer's number
@@ -100,7 +100,7 @@ Please don't type ^D at the prompt!!
     (2): ???? 3355
     00
     (1): ???? 6444
-    40		   # we have guessed the number
+    40		   	# we have guessed the number
 ```
 
 

1993/leo/index.html

@@ -194,15 +194,15 @@ backspaces. Do “disable scrolling” on cmdtool or similar emulators.</p>
 <h5 id="example-suppose-we-think-of-1234">EXAMPLE: Suppose we think of 1234</h5>
 <pre><code>    $ ./leo
     (1296): 6433
-    ?? 12       # one 3 is a bull, another is a cow, and 4 is a cow
+    ?? 12               # one 3 is a bull, another is a cow, and 4 is a cow
     (160): 5363
-    ?? 02       # both 3&#39;s are cows
+    ?? 02               # both 3&#39;s are cows
     (21): 4231
-    ?? 22       # 2 and 3 are bulls, 4 and 1 are cows
+    ?? 22               # 2 and 3 are bulls, 4 and 1 are cows
     (2): 4132
-    ?? 13       # 3 is a bull; 1, 2 and 4 are cows
+    ?? 13               # 3 is a bull; 1, 2 and 4 are cows
     (1): 1234
-    ?? 40       # you may enter everything there</code></pre>
+    ?? 40               # you may enter everything there</code></pre>
 <h5 id="example-guess-the-computers-number">EXAMPLE: Guess the computer’s number</h5>
 <pre><code>    $ ./mind
     (1296): ???? 1122   # my strategy isn&#39;t the best, just as example
@@ -216,7 +216,7 @@ backspaces. Do “disable scrolling” on cmdtool or similar emulators.</p>
     (2): ???? 3355
     00
     (1): ???? 6444
-    40             # we have guessed the number</code></pre>
+    40                  # we have guessed the number</code></pre>
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