Fix punctuation in Rollup bundler description

Corrected punctuation in the Rollup bundler description.

Author: MarkvanMents

content/en/docs/refguide/modeling/app-explorer/app/app-settings/runtime-tab.md

@@ -30,7 +30,7 @@ This setting was introduced in [Mendix 11.9.0](/releasenotes/studio-pro/11.9/).
 The available options are listed below:
 
 * **Rspack**: Use the Rspack application bundler for faster build times and lower memory usage.
-* **Rollup**: Use Rollup application bundler (default)
+* **Rollup**: Use Rollup application bundler (default).
 
 For more information about Rspack, see the [official documentation](https://www.rspack.dev/).