fix markdown links to .txt files that use a %%TOKEN%%

2015/burton/road.to.obscurity.html

@@ -570,7 +570,7 @@ relatively tight. But changing around the stable initialization code – by now
 the largest piece of logic – yielded the necessary bytes, and improved
 obscurity by double duty encoding of the operations initialization.</p>
 <p>The utility is now truly functional, and feature complete, and obscure. Without
-<a href="https://github.com/ioccc-src/temp-test-ioccc/blob/master/2015/burton/src.doc.txt">src.doc.txt</a> (basic documentation of the code structure), and some
+<a href="src.doc.txt">src.doc.txt</a> (basic documentation of the code structure), and some
 commented expanded logic stashed away, and the familiarity I have with the code
 having written and revised it repeatedly, I would not even want to attempt to
 decipher the logic. Many times in the debugging, I was thwarted by my own