Docs on single doc

Author: gavinbunney

docs/resources/kubectl_manifest.md

@@ -6,6 +6,9 @@ This resource handles creation, deletion and even updating your kubernetes resou
 
 Behind the scenes, this provider uses the same capability as the `kubectl apply` command, that is, you can update the YAML inline and the resource will be updated in place in kubernetes.
 
+> **TIP:** This resource only supports a single yaml resource. If you have a list of documents in your yaml file,
+> use the [kubectl_path_documents](https://registry.terraform.io/providers/gavinbunney/kubectl/latest/docs/data-sources/kubectl_path_documents) data source to split the files into individual resources.
+
 ## Example Usage
 
 ```hcl