(DOCSP-28363): Fix Google auth arg (#2647)

## Pull Request Info

Fix Google auth arg for redirect flow

### Jira

- https://jira.mongodb.org/browse/DOCSP-28363

### Staged Changes

- [Authenticate Users (Web
SDK)](https://docs-mongodbcom-staging.corp.mongodb.com/realm/docsworker-xlarge/DOCSP-28363/web/authenticate/)

### Reminder Checklist

If your PR modifies the docs, you might need to also update some
corresponding
pages. Check if completed or N/A.

- [ ] Create Jira ticket for corresponding docs-app-services update(s),
if any
- [ ] Checked/updated Admin API
- [ ] Checked/updated CLI reference

### Review Guidelines


[REVIEWING.md](https://github.com/mongodb/docs-realm/blob/master/REVIEWING.md)

Author: mongodben

source/web/authenticate.txt

@@ -292,10 +292,10 @@ require you to install a Google SDK. The built-in flow follows three main steps:
 
           const authButton = document.getElementById("google-auth");
           authButton.addEventListener("click", () => {
-            // The redirect URI should be on the same domain as this app and
+            // The redirect URL should be on the same domain as this app and
             // specified in the auth provider configuration.
-            const redirectUri = "http://yourDomain/auth.html";
-            const credentials = Realm.Credentials.google(redirectUri);
+            const redirectUrl = "http://yourDomain/auth.html";
+            const credentials = Realm.Credentials.google({ redirectUrl });
             // Calling logIn() opens a Google authentication screen in a new window.
             app
               .logIn(credentials)