Update books

ehuss · ehuss · commit 965dc6b74b7c · 2019-04-06T10:06:51.000-07:00
diff --git a/src/doc/embedded-book b/src/doc/embedded-book
@@ -1 +1 @@
-Subproject commit 07fd3880ea0874d82b1d9ed30ad3427ec98b4e8a
+Subproject commit 7989c723607ef5b13b57208022259e6c771e11d0
diff --git a/src/doc/nomicon b/src/doc/nomicon
@@ -1 +1 @@
-Subproject commit f1ff93b66844493a7b03101c7df66ac958c62418
+Subproject commit c02e0e7754a76886e55b976a3a4fac20100cd35d
diff --git a/src/doc/reference b/src/doc/reference
@@ -1 +1 @@
-Subproject commit 27ad493a10364e907ec476e2ad61e8a1614b57e1
+Subproject commit 98f90ff4de8e588f651f0fb493b5c7496551cd59
