Update books

ehuss · ehuss · commit b4678870d9c2 · 2021-12-23T08:44:14.000-08:00
diff --git a/src/doc/book b/src/doc/book
@@ -1 +1 @@
-Subproject commit 5f9358faeb1f46e19b8a23a21e79fd7fe150491e
+Subproject commit 8a0bb3c96e71927b80fa2286d7a5a5f2547c6aa4
diff --git a/src/doc/nomicon b/src/doc/nomicon
@@ -1 +1 @@
-Subproject commit 49681ea4a9fa81173dbe9ffed74b4d4a35eae9e3
+Subproject commit c05c452b36358821bf4122f9c418674edd1d713d
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 954f3d441ad880737a13e241108f791a4d2a38cd
+Subproject commit 06f9e61931bcf58b91dfe6c924057e42ce273ee1
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
@@ -1 +1 @@
-Subproject commit a374e7d8bb6b79de45b92295d06b4ac0ef35bc09
+Subproject commit 9bf0028b557798ddd07a6f652e4d0c635d3d6620
