doc(tools): Broken link GEF

src/resources/templates/resources/tools.html

@@ -16,7 +16,7 @@
                 - <a href="https://cutter.re">cutter</a></br>
                 - <a href="https://github.com/ReFirmLabs/binwalk">binwalk</a></br>
                 - <a href="https://rada.re">r2</a></br>
-                - <a href="https://gef.readthedocs.io/en/master/">gdb/gef</a></br>
+                - <a href="https://hugsy.github.io/gef/">gdb/gef</a></br>
                 - qemu-user</br>
                 <br>
                 {% trans "If you want to solve the challenges on your own machine, we recommend you to use a Linux operating system."%}
@@ -31,4 +31,4 @@
         </div>
     </div>
 
-{% endblock %}
+{% endblock %}