Add context on calling fetch with no-cache (#34304)

Author: guardrex

aspnetcore/blazor/host-and-deploy/webassembly.md

@@ -116,7 +116,7 @@ In the `wwwroot/index.html` file, set `autostart` to `false` on Blazor's `<scrip
 <script src="_framework/blazor.webassembly.js" autostart="false"></script>
 ```
 
-After Blazor's `<script>` tag and before the closing `</body>` tag, add the following JavaScript code `<script>` block.
+After Blazor's `<script>` tag and before the closing `</body>` tag, add the following JavaScript code `<script>` block. The following function calls `fetch` with [`cache: 'no-cache'`](https://developer.mozilla.org/docs/Web/API/Request/cache#value) to keep the browser's cache updated.
 
 :::moniker range=">= aspnetcore-8.0"