Fix relative links in abstracts.

Author: arthurgleckler

index.html

@@ -81,5 +81,5 @@ <h2>Abstract</h2>      <p>Lazy sequences (or lseqs, pronounced
       returns an end-of-file object. Consequently, lazy sequences cannot
       reliably contain end-of-file objects.
       <p>This SRFI provides a set of procedures suitable
-      for operating on lazy sequences based on <a href="srfi-1/">SRFI
+      for operating on lazy sequences based on <a href="/srfi-1/">SRFI
       1</a>.</body></html>