docs: mention goto function alongside redirect (#8781)

Co-authored-by: Simon H <[email protected]>
Co-authored-by: Rich Harris <[email protected]>

documentation/docs/20-core-concepts/20-load.md

@@ -417,6 +417,8 @@ export function load({ locals }) {
 
 > Make sure you're not catching the thrown redirect, which results in a noop.
 
+In the browser, you can also navigate programmatically outside of a `load` function using [`goto`](modules#$app-navigation-goto) from [`$app.navigation`](modules#$app-navigation).
+
 ## Promise unwrapping
 
 Top-level promises will be awaited, which makes it easy to return multiple promises without creating a waterfall: