MONGOID-5476 update 9.0 installation version (#5465)

Neilshweky · web-flow · commit bfdaa99ec725 · 2022-09-12T12:52:52.000-04:00
diff --git a/docs/installation.txt b/docs/installation.txt
@@ -27,7 +27,7 @@ To install the gem with bundler, include the following in your ``Gemfile``:
 
 .. code-block:: ruby
 
-   gem 'mongoid', '~> 7.3.0'
+   gem 'mongoid', '~> 9.0.0'
 
 Using Mongoid with a New Rails Application
 ==========================================
