Update books

ehuss · ehuss · commit e02dafcaaaf4 · 2020-06-23T17:56:33.000-07:00
diff --git a/src/doc/book b/src/doc/book
@@ -1 +1 @@
-Subproject commit 30cd9dfe71c446de63826bb4472627af45acc9db
+Subproject commit 4e7c00bece1544d409312ec93467beb62b5bd0cb
diff --git a/src/doc/embedded-book b/src/doc/embedded-book
@@ -1 +1 @@
-Subproject commit 5555a97f04ad7974ac6fb8fb47c267c4274adf4a
+Subproject commit 616962ad0dd80f34d8b802da038d0aed9dd691bb
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 5d40ba5c2515caffa7790cda621239dc21ef5a72
+Subproject commit 04d5d5d7ba624b6f5016298451f3a63d557f3260
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 7aa82129aa23e7e181efbeb8da03a2a897ef6afc
+Subproject commit 6f94ccb48da6fa4ed0031290f21411cf789f7d5e
