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.