fix: update SciPy code of conduct link

Author: szhorvat

code-of-conduct.html

@@ -239,7 +239,7 @@ <h2><span id="incident-reporting" class="anchor">&nbsp;</span>
       <h2><span id="endnotes" class="anchor">&nbsp;</span>
         Endnotes</h2>
       <p>This Code of Conduct is inspired by
-          <a href="https://docs.scipy.org/doc/scipy/reference/dev/conduct/code_of_conduct.html">The SciPy Code of
+          <a href="https://docs.scipy.org/doc/scipy/dev/conduct/code_of_conduct.html">The SciPy Code of
               Conduct</a>.
       </p>
       <p>The current organisation of the igraph community is rudimentary. A more professional organisation may develop