update vsix doc

Scenarios/settings.md

@@ -91,7 +91,7 @@ The repository settings are only read from the repository settings file (.github
 | <a id="failOn"></a>failOn | Specifies what the pipeline will fail on. Allowed values are none, warning and error | error |
 | <a id="rulesetFile"></a>rulesetFile | Filename of the custom ruleset file | |
 | <a id="enableExternalRulesets"></a>enableExternalRulesets | If enableExternalRulesets is set to true, then you can have external rule references in the ruleset | false |
-| <a id="vsixFile"></a>vsixFile | A direct download URL, pointing to the AL Language VSIX file to use for building the apps. By default, AL-Go uses the AL Language extension, which is shipped with the artifacts used for the build. | |
+| <a id="vsixFile"></a>vsixFile | Determines which version of the AL Language Extension to use for building the apps. This can be:<br />**default** to use the AL Language Extension which ships with the Business Central version you are building for<br />**latest** to always download the latest AL Language Extension from the marketplace<br />**preview** to always download the preview AL Language Extension from the marketplace.<br/>or a **direct download URL** pointing to the AL Language VSIX file to use for building the apps.<br />By default, AL-Go uses the AL Language extension, which is shipped with the artifacts used for the build. | default |
 | <a id="codeSignCertificateUrlSecretName"></a>codeSignCertificateUrlSecretName<br />codeSignCertificatePasswordSecretName | When developing AppSource Apps, your app needs to be code signed and you need to add secrets to GitHub secrets or Azure KeyVault, specifying the secure URL from which your codesigning certificate pfx file can be downloaded and the password for this certificate. These settings specifies the names (**NOT the secrets**) of the code signing certificate url and password. Default is to look for secrets called CodeSignCertificateUrl and CodeSignCertificatePassword. Read [this](SetupCiCdForExistingAppSourceApp.md) for more information. | CodeSignCertificateUrl<br />CodeSignCertificatePassword |
 | <a id="keyVaultCodesignCertificateName"></a>keyVaultCodesignCertificateName | Name of a certificate stored in your KeyVault that can be used to codesigning. To use this setting you will also need enable Azure KeyVault in your AL-GO project. Read [this](UseAzureKeyVault.md) for more information | |
 | <a id="applicationInsightsConnectionStringSecretName"></a>applicationInsightsConnectionStringSecretName | This setting specifies the name (**NOT the secret**) of a secret containing the application insights connection string for the apps. | applicationInsightsConnectionString |