debug.html: Correct link.

2007-06-06  Benjamin Kosnik  <bkoz@redhat.com>
	    Frank Mori Hess  <frank.hess@nist.gov>
	        
    * docs/html/debug.html: Correct link.

From-SVN: r125488

libstdc++-v3/docs/html/18_support/howto.html

@@ -229,6 +229,7 @@
    {
        std::set_terminate(__gnu_cxx::__verbose_terminate_handler);
        ...
+
        throw <em>anything</em>;
    }</pre>
    <p>The <code> __verbose_terminate_handler </code> function obtains the name