doc: add --include-off option

Author: HerringtonDarkholme

website/reference/cli.md

@@ -107,6 +107,7 @@ ast-grep test [OPTIONS]
 |   | --skip-snapshot-tests           |Only check if the test code is valid, without checking rule output. Turn it on when you want to ignore the output of rules|
 | -U| --update-all                   |Update the content of all snapshots that have changed in test.|
 | -f| --filter                        |Filter rule test cases to execute using a glob pattern.|
+|   | --include-off                   | Include `severity:off` rules in test
 | -i| --interactive                   |start an interactive review to update snapshots selectively.|
 | -h| --help                          |Print help.|
 

website/reference/cli/test.md

@@ -41,6 +41,11 @@ Start an interactive review to update snapshots selectively
 
 Filter rule test cases to execute using a glob pattern
 
+### `--include-off`
+Include `severity:off` rules in test
+
+ast-grep will not run rules with `severity: off` by default. This option will include those rules in the test.
+
 ### `-h, --help`
 
 Print help