update docs

website/pages/docs/drivers/docker.mdx

@@ -408,11 +408,12 @@ The `docker` driver supports the following configuration in the job spec. Only
 
 - `runtime` - (Optional) A string representing a configured runtime to pass to docker.
   This is equivalent to the `--runtime` argument in the docker CLI
-  For example, to use gvisor:
+  For example, to use gVisor:
 
   ```hcl
   config {
-    runtime = "runc"
+    # gVisor runtime is runsc
+    runtime = "runsc"
   }
   ```
 
@@ -709,6 +710,9 @@ plugin "docker" {
   and cap_drop options. Supports the value "ALL" as a shortcut for whitelisting
   all capabilities.
 
+- `allow_runtimes` - defaults to `["runc", "nvidia"]` - A list of the allowed
+  docker runtimes a task may use.
+
 - `auth` stanza:
 
   - `config`<a id="plugin_auth_file"></a> - Allows an operator to specify a