chore: add more maintenance notices on the documentation

docs/examples.md

diff --git a/docs/examples.md b/docs/examples.md
index ee0d477..a6ed4ee 100644
--- a/docs/examples.md
+++ b/docs/examples.md
@@ -5,6 +5,10 @@
 ---
 # Examples
 
+> 🚨 rules_nodejs is now mostly unmaintained! 🚨
+>
+> See the Maintenance Update in the [root README](https://github.com/bazelbuild/rules_nodejs#maintenance-update)
+
 ## Frameworks
 
 ### Angular

docs/index.md

diff --git a/docs/index.md b/docs/index.md
index d0d372d..6889df9 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -8,6 +8,10 @@
 
 Bazel rules to build and test code that targets a JavaScript runtime, including NodeJS and browsers.
 
+> 🚨 rules_nodejs is now mostly unmaintained! 🚨
+>
+> See the Maintenance Update in the [root README](https://github.com/bazelbuild/rules_nodejs#maintenance-update)
+
 ## Scope of the project
 
 This repository contains three layers:

docs/install.md

diff --git a/docs/install.md b/docs/install.md
index 6d07f74..a2a26a1 100644
--- a/docs/install.md
+++ b/docs/install.md
@@ -6,6 +6,10 @@
 
 # Installation
 
+> 🚨 rules_nodejs is now mostly unmaintained! 🚨
+>
+> See the Maintenance Update in the [root README](https://github.com/bazelbuild/rules_nodejs#maintenance-update)
+
 First, you need Bazel.
 We recommend using Bazelisk, which is a version-selection wrapper, similar to
 the `nvm` tool managing your version of Node.