Publish docs for Bazel 2.2.0.

RELNOTES: None.
PiperOrigin-RevId: 298558033
diff --git a/scripts/docs/doc_versions.bzl b/scripts/docs/doc_versions.bzl
index f9833b9..f0bde1a 100644
--- a/scripts/docs/doc_versions.bzl
+++ b/scripts/docs/doc_versions.bzl
@@ -23,6 +23,10 @@
 
 DOC_VERSIONS = [
     {
+        "version": "2.2.0",
+        "sha256": "4c1506786ab98df8039ec7354b82da7b586b2ae4ab7f7e7d08f3caf74ff28e3d",
+    },
+    {
         "version": "2.1.0",
         "sha256": "b0fd257b1d6b1b05705742d55a13b9a20d3e99f49c89334750c872d620e5b88f",
     },
diff --git a/site/_config.yml b/site/_config.yml
index 1cd9960..630b1e4 100644
--- a/site/_config.yml
+++ b/site/_config.yml
@@ -13,11 +13,12 @@
   - jekyll-toc
 
 # Update this to the newest release for the default docs.bazel.build version.
-version: "2.1.0"
+version: "2.2.0"
 
 # This must be kept in sync with //scripts/docs:doc_versions.bzl
 doc_versions:
   - master
+  - 2.2.0
   - 2.1.0
   - 2.0.0
   - 1.2.0