link to kube-custom-resources-rs

Signed-off-by: clux <sszynrae@gmail.com>

docs/controllers/object.md

@@ -149,7 +149,7 @@ pub struct PrometheusRuleGroupsRules {
 }
 ```
 
-you typically would then import this file as a module and use it as follows:
+you can then import this file as a module and use it as follows:
 
 ```rust
 use prometheusrule::PrometheusRule;
@@ -161,6 +161,9 @@ Controller::new(prs, watcher::Config::default())
 !!! warning "Kopium is unstable"
 
     Kopium is a relatively new project and it is [neither feature complete nor bug free at the moment](https://github.com/kube-rs/kopium/issues). While feedback has been very positive, and people have so far contributed fixes for several major customresources; **expect some snags**.
+
+These generated structs are sometimes published for easier consumption consumption. The [kube-custom-resources-rs](https://github.com/metio/kube-custom-resources-rs) crate contains a catalog of generated code from compatible schemas.
+
 ## Dynamic Typing