Update RE doc page

Tested: bazel build //site:site_latest

Closes #11295.

PiperOrigin-RevId: 310024521
diff --git a/scripts/docs/doc_versions.bzl b/scripts/docs/doc_versions.bzl
index f8b2907..3bc8772 100644
--- a/scripts/docs/doc_versions.bzl
+++ b/scripts/docs/doc_versions.bzl
@@ -23,8 +23,8 @@
 
 DOC_VERSIONS = [
     {
-        "version": "3.1.0",
-        "sha256": "798abb170725650138e82569bce103f6dde8c647d3f0fddec7f5afef07972729",
+        "version": "3.1.0-807b377",  # cherrypicked 807b377.
+        "sha256": "f9d2e22e24af426d6c9de163d91abe6d8af7eb1eabb1d7ff5e9cf4bededf465a",
     },
     {
         "version": "3.0.0",