replace old ASCII > style with markdown code blocks

1990/scjones/README.md

@@ -28,10 +28,12 @@ ISO character set.
 
 The Author sent us this note after he was informed that he won:
 
-> Although I am quite grateful for the "ANSI Committee's Worst Abuse of C" title
-> (were you aware that I am a member of the committee or is the double meaning
-> unintentional?), I was really hoping for something more along the lines of
-> "Closest Resemblance to Line Noise."  :-)
+```
+    Although I am quite grateful for the "ANSI Committee's Worst Abuse of C" title
+    (were you aware that I am a member of the committee or is the double meaning
+    unintentional?), I was really hoping for something more along the lines of
+    "Closest Resemblance to Line Noise."  :-)
+```
 
 ... it was unintentional.
 

1990/scjones/index.html

@@ -162,12 +162,10 @@ was a dark and stormy night for C when the ANSI C committee added trigraphs to
 the standard. Too bad that they didn’t just simply require a more reasonable
 ISO character set.</p>
 <p>The Author sent us this note after he was informed that he won:</p>
-<blockquote>
-<p>Although I am quite grateful for the “ANSI Committee’s Worst Abuse of C” title
-(were you aware that I am a member of the committee or is the double meaning
-unintentional?), I was really hoping for something more along the lines of
-“Closest Resemblance to Line Noise.” :-)</p>
-</blockquote>
+<pre><code>    Although I am quite grateful for the &quot;ANSI Committee&#39;s Worst Abuse of C&quot; title
+    (were you aware that I am a member of the committee or is the double meaning
+    unintentional?), I was really hoping for something more along the lines of
+    &quot;Closest Resemblance to Line Noise.&quot;  :-)</code></pre>
 <p>… it was unintentional.</p>
 <h2 id="authors-remarks">Author’s remarks:</h2>
 <p>Since this year’s contest is dedicated to ANSI C, here is a strictly conforming