doc: update CLI tool documentation for starting surreal sql interacti…

…ve shell (#1056)

src/content/doc-surrealdb/cli/index.mdx

@@ -29,7 +29,7 @@ Unless you specify otherwise, the CLI will start a database in memory that serve
 In another window, you can then open up an interactive shell to make queries using the  `surreal sql` command.
 
 ```bash
-surreal sql --endpoint http://localhost:8000 --namespace ns --database db --pretty
+surreal sql --endpoint http://localhost:8000 --namespace ns --database db --username root --password root --pretty
 ```
 
 > [!WARNING]