fix an error trying to cat a thing that's a dir now

literary_problem/index.md

@@ -54,7 +54,8 @@ example for March 1st:
 
 And here's an older one that contains a short poem:
 
-<!-- exec -->
+<!-- took this one out of exec block 'cause later i
+     made a dir out of it... -->
 
     $ cat ~/p1k3/archives/2012/10/9
     <h1>tuesday, october 9</h1>
@@ -64,8 +65,6 @@ And here's an older one that contains a short poem:
     a clattering miscellany of impure functions
     and side effects</freeverse>
 
-<!-- end -->
-
 Notice that `<freeverse>` bit?  It kind of looks like an HTML tag, but it's
 not.  What it actually does is tell my blog script that it should format the
 text it contains like a poem.  The specifics don't matter for our purposes