update Sphinx extension submodule reference

xabbuh · xabbuh · commit 5ca2df8c9d7e · 2014-10-29T23:23:54.000+01:00
diff --git a/_exts b/_exts
@@ -1 +1 @@
-Subproject commit e58edd22d16cb247267025d557410dcbfa5fa959
+Subproject commit 52f7bd2216cc22ef52494f346c5643bb2a74513f
