Bug 1617836 - Reference the asan docs in the menu r=decoder

Depends on D64069

Differential Revision: https://phabricator.services.mozilla.com/D64070

--HG--
extra : moz-landing-system : lando

tools/fuzzing/docs/index.rst

@@ -1,6 +1,12 @@
 Fuzzing
 =======
 
+.. toctree::
+  :maxdepth: 1
+  :glob:
+
+  *
+
 This section focuses on explaining the software testing technique called
 “Fuzzing” or “Fuzz Testing” and its application to the Mozilla codebase.
 The overall goal is to educate developers about the capabilities and