update docs

Signed-off-by: hectorj2f <[email protected]>

modules/github-bots/README.md

@@ -120,7 +120,7 @@ No requirements.
 | <a name="input_project_id"></a> [project\_id](#input\_project\_id) | Project ID to create resources in. | `string` | n/a | yes |
 | <a name="input_raw_filter"></a> [raw\_filter](#input\_raw\_filter) | Raw PubSub filter to apply, ignores other variables. https://cloud.google.com/pubsub/docs/subscription-message-filter#filtering_syntax | `string` | `""` | no |
 | <a name="input_regions"></a> [regions](#input\_regions) | A map from region names to a network and subnetwork. | <pre>map(object({<br/>    network = string<br/>    subnet  = string<br/>  }))</pre> | n/a | yes |
-| <a name="input_service_account_email"></a> [service\_account\_email](#input\_service\_account\_email) | The email of the service account being authorized to invoke the private Cloud Run service. | `string` | `""` | no |
+| <a name="input_service_account_email"></a> [service\_account\_email](#input\_service\_account\_email) | The email of the service account being authorized to invoke the private Cloud Run service. If empty, a service account will be created and used. | `string` | `""` | no |
 
 ## Outputs