replace console.log with nicelog (#1496)

This PR replaces our `console.log` with `nicelog` so that I can more
easily grep for errant console.logs.

### Change Type

- [x] `internal` — Any other changes that don't affect the published
package (will not publish a new version)

apps/docs/content/docs/api.mdx

@@ -58,7 +58,7 @@ You can subscribe to changes using `app.store.listen`. Each time a transaction c
 
 ```ts
 app.store.listen(entry => {
-  console.log(entry) // { changes, source }
+  entry // { changes, source }
 })
 ```