Update books

rustbot · rustbot · commit 1f6a55d8ba5d · 2026-01-26T18:00:52.000+01:00
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 28b5a54419985f03db5294de5eede71b6665b594
+Subproject commit 990819b86c22bbf538c0526f0287670f3dc1a67a
diff --git a/src/doc/rust-by-example b/src/doc/rust-by-example
@@ -1 +1 @@
-Subproject commit 8de6ff811315ac3a96ebe01d74057382e42ffdee
+Subproject commit bac931ef1673af63fb60c3d691633034713cca20
