Add format documentation for artifact_registry_repository (#5029) (#3475)

* Add format documentation for artifact_registry_repository

* Update mmv1/products/artifactregistry/api.yaml

Co-authored-by: Cameron Thornton <[email protected]>

Co-authored-by: Cameron Thornton <[email protected]>
Signed-off-by: Modular Magician <[email protected]>

Co-authored-by: Cameron Thornton <[email protected]>

Author: modular-magician

.changelog/5029.txt

@@ -0,0 +1,3 @@
+```release-note:none
+
+```

google-beta/resource_artifact_registry_repository.go

@@ -43,10 +43,18 @@ func resourceArtifactRegistryRepository() *schema.Resource {
 
 		Schema: map[string]*schema.Schema{
 			"format": {
-				Type:        schema.TypeString,
-				Required:    true,
-				ForceNew:    true,
-				Description: `The format of packages that are stored in the repository.`,
+				Type:     schema.TypeString,
+				Required: true,
+				ForceNew: true,
+				Description: `The format of packages that are stored in the repository. You can only create
+alpha formats if you are a member of the [alpha user group](https://cloud.google.com/artifact-registry/docs/supported-formats#alpha-access).
+
+- DOCKER
+- MAVEN ([Preview](https://cloud.google.com/products#product-launch-stages))
+- NPM ([Preview](https://cloud.google.com/products#product-launch-stages))
+- PYTHON ([Preview](https://cloud.google.com/products#product-launch-stages))
+- APT ([alpha](https://cloud.google.com/products#product-launch-stages))
+- YUM ([alpha](https://cloud.google.com/products#product-launch-stages))`,
 			},
 			"repository_id": {
 				Type:     schema.TypeString,

website/docs/r/artifact_registry_repository.html.markdown

@@ -117,7 +117,14 @@ The following arguments are supported:
 
 * `format` -
   (Required)
-  The format of packages that are stored in the repository.
+  The format of packages that are stored in the repository. You can only create
+  alpha formats if you are a member of the [alpha user group](https://cloud.google.com/artifact-registry/docs/supported-formats#alpha-access).
+  - DOCKER
+  - MAVEN ([Preview](https://cloud.google.com/products#product-launch-stages))
+  - NPM ([Preview](https://cloud.google.com/products#product-launch-stages))
+  - PYTHON ([Preview](https://cloud.google.com/products#product-launch-stages))
+  - APT ([alpha](https://cloud.google.com/products#product-launch-stages))
+  - YUM ([alpha](https://cloud.google.com/products#product-launch-stages))
 
 
 - - -