Update docs regarding HTTP/2 in Cloud Run services (#6882) (#4924)

Signed-off-by: Modular Magician <[email protected]>

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/6882.txt

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

google-beta/resource_cloud_run_service.go

@@ -409,7 +409,7 @@ https://cloud.google.com/run/docs/reference/rest/v1/RevisionSpec#ContainerPort`,
 																Type:        schema.TypeString,
 																Computed:    true,
 																Optional:    true,
-																Description: `If specified, used to specify which protocol to use. Allowed values are "http1" and "h2c".`,
+																Description: `If specified, used to specify which protocol to use. Allowed values are "http1" (HTTP/1) and "h2c" (HTTP/2 end-to-end)`,
 															},
 															"protocol": {
 																Type:        schema.TypeString,

website/docs/r/cloud_run_service.html.markdown

@@ -547,7 +547,7 @@ The following arguments are supported:
 
 * `name` -
   (Optional)
-  If specified, used to specify which protocol to use. Allowed values are "http1" and "h2c".
+  If specified, used to specify which protocol to use. Allowed values are "http1" (HTTP/1) and "h2c" (HTTP/2 end-to-end)
 
 * `protocol` -
   (Optional)