Update render_regional_param_version.py comment for rendering latest version

Author: sc-07

parametermanager/snippets/regional_samples/render_regional_param_version.py

@@ -34,7 +34,7 @@ def render_regional_param_version(
         location_id (str): The ID of the region where the parameter is located.
         parameter_id (str): The ID of the parameter for
         which version details are to be rendered.
-        version_id (str): The ID of the version to be rendered.
+        version_id (str): The ID of the version or alias (e.g. "latest") to be rendered.
 
     Returns:
         parametermanager_v1.RenderParameterVersionResponse: An object