Update books

ehuss · ehuss · commit c012487bdef0 · 2020-09-02T11:10:36.000-07:00
diff --git a/src/doc/book b/src/doc/book
@@ -1 +1 @@
-Subproject commit c0a6a61b8205da14ac955425f74258ffd8ee065d
+Subproject commit e5ed97128302d5fa45dbac0e64426bc7649a558c
diff --git a/src/doc/edition-guide b/src/doc/edition-guide
@@ -1 +1 @@
-Subproject commit bd6e4a9f59c5c1545f572266af77f5c7a5bad6d1
+Subproject commit 81f16863014de60b53de401d71ff904d163ee030
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 1b6c4b0afab97c0230433466c97167bbbe8445f6
+Subproject commit 25391dba46262f882fa846beefaff54a966a8fa5
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 80a10e22140e28392b99d24ed02f4c6d8cb770a0
+Subproject commit 19f0a0372af497b34369cf182d9d16156cab2969
