Update books

ehuss · ehuss · commit 7c08d5e87d70 · 2021-06-08T19:15:11.000-07:00
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 9c68af3ce6ccca2395e1868addef26a0542e9ddd
+Subproject commit 8f598e2af6c25b4a7ee88ef6a8196d9b8ea50ca8
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
@@ -1 +1 @@
-Subproject commit 50de7f0682adc5d95ce858fe6318d19b4b951553
+Subproject commit c8da5bfd1c7c71d90ef1646f5e0a9f6609d5c78a
