Update custom-saml-google-workspace.mdx

Author: clairekinde11

src/content/docs/authenticate/enterprise-connections/custom-saml-google-workspace.mdx

@@ -70,7 +70,8 @@ You can make a connection available only to a specific organization, or you can
 
 13. (Temporary feature) Select if you want to treat this connection as a trusted provider. A [trusted provider](/authenticate/about-auth/identity-and-verification/) is one that guarantees the email they issue is verified.
 14. (Optional) In the **Sign SAML request** section, paste in the **Signed certificate** and **Private key**. You may have got these from your IdP or you may have generated yourself (see procedure above).
-15. Select **Save**.
+15. Enter any [upstream params](/authenticate/enterprise-connections/advanced-saml-configurations/#upstream-parameters) that you want to pass to the identity provider. Not all providers support this, so check their documentation first.
+16. Select **Save**.
 
 
 ## Step 3: Configure Google Workspace Admin Console