Update documentation for the release of 3.0.0.

Part of #10742.

Closes #11073.

PiperOrigin-RevId: 305024363
diff --git a/scripts/docs/doc_versions.bzl b/scripts/docs/doc_versions.bzl
index f0bde1a..c261a3c 100644
--- a/scripts/docs/doc_versions.bzl
+++ b/scripts/docs/doc_versions.bzl
@@ -23,6 +23,10 @@
 
 DOC_VERSIONS = [
     {
+        "version": "3.0.0",
+        "sha256": "bd1096ad609c253fa7b1473edf4a3aa51f36243e188dbb62c68d8ed4aca2419d",
+    },
+    {
         "version": "2.2.0",
         "sha256": "4c1506786ab98df8039ec7354b82da7b586b2ae4ab7f7e7d08f3caf74ff28e3d",
     },