Document the license-check & vulnerability-check config options

Include the license-check and vulnerability-check options in the config
documentation in the README.

Also fix a typo in the README ("configuraton" -> "configuration").

README.md

@@ -71,7 +71,7 @@ or by inlining these options in your workflow file.
 
 ### config-file
 
-A string representing the path to an external configuraton file. By
+A string representing the path to an external configuration file. By
 default external configuration files are not used.
 
 **Possible values**: A string representing the absolute path to the
@@ -155,6 +155,20 @@ allow-ghsas:
   - GHSA-efgh-1234-5679
 ```
 
+### license-check/vulnerability-check
+
+Disable the license checks or vulnerability checks performed by this Action.
+You can't disable both checks.
+
+**Possible values**: `true` or `false`
+
+**Example**:
+
+```yaml
+license-check: true
+vulnerability-check: false
+```
+
 ### base-ref/head-ref
 
 Provide custom git references for the git base/head when performing