Update books

ehuss · ehuss · commit e6fd96df983b · 2021-04-14T08:24:06.000-07:00
diff --git a/src/doc/embedded-book b/src/doc/embedded-book
@@ -1 +1 @@
-Subproject commit d3f2ace94d51610cf3e3c265705bb8416d37f8e4
+Subproject commit 569c3391f5c0cc43433bc77831d17f8ff4d76602
diff --git a/src/doc/nomicon b/src/doc/nomicon
@@ -1 +1 @@
-Subproject commit 6fe476943afd53a9a6e91f38a6ea7bb48811d8ff
+Subproject commit 8551afbb2ca6f5ea37fe58380318b209785e4e02
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit fd97729e2d82f8b08d68a31c9bfdf0c37a7fd542
+Subproject commit e1abb17cd94cd5a8a374b48e1bc8134a2208ed48
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 29d91f591c90dd18fdca6d23f1a9caf9c139d0d7
+Subproject commit c80f0b09fc15b9251825343be910c08531938ab2
diff --git a/src/doc/rustc-dev-guide b/src/doc/rustc-dev-guide
@@ -1 +1 @@
-Subproject commit 0687daac28939c476df51778f5a1d1aff1a3fddf
+Subproject commit a9bd2bbf31e4f92b5d3d8e80b22839d0cc7a2022
