replace old ASCII > style with markdown code blocks

1989/paul/README.md

@@ -19,7 +19,7 @@ out. See [alternate code](#alternate-code) below for more details.
 
 This version was described by the author like:
 
-> I could have squeezed the program under 1024 bytes without the
+I could have squeezed the program under 1024 bytes without the
 trace subroutine, but I felt it was important for understanding
 the program.  Besides it is fun to watch the tape zooming back
 and forth as the program runs.  A much better debugger or trace