replace old ASCII > style with markdown code blocks

2000/schneiderwent/README.md

@@ -53,7 +53,9 @@ keeping the program portable between different encodings
 
 This entry displays the current time to the console, for example:
 
-> it's just after ten 'til 6 in the evening
+```
+    it's just after ten 'til 6 in the evening
+```
 
 FWIW, none of the compilers with which this entry was tested issued
 any warnings or errors in compiling the source for this entry.  No

2000/schneiderwent/index.html

@@ -175,9 +175,7 @@ keeping the program portable between different encodings
 (Chinese, Japanese, Russian - anyone?) may be an entertaining task.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>This entry displays the current time to the console, for example:</p>
-<blockquote>
-<p>it’s just after ten ’til 6 in the evening</p>
-</blockquote>
+<pre><code>    it&#39;s just after ten &#39;til 6 in the evening</code></pre>
 <p>FWIW, none of the compilers with which this entry was tested issued
 any warnings or errors in compiling the source for this entry. No
 doubt lint will complain about the goto statements.</p>