Page not found: gbcustomizer-basic-tutorial.zip

### Apache NetBeans version

Apache NetBeans 17

### What happened

I. am trying to go through the NetBeans tutorial for Java SE applications using the basic grid bag. The link provided to download the code gives me a page not found: [gbcustomizer-basic-tutorial.zip](https://netbeans.org/projects/samples/downloads/download/Samples%252FJava%252Fgbcustomizer-basic-tutorial.zip)

### How to reproduce

Launch NetBeans IDE.
Under Demoes and Tutorials
Select Java SE Applications
Then select:
[Designing a Basic Java Form Using the GridBag Customizer](https://netbeans.apache.org/kb/docs/java/gbcustomizer-basic.html)
Then click the link for the software resource:
[gbcustomizer-basic-tutorial.zip](https://netbeans.org/projects/samples/downloads/download/Samples%252FJava%252Fgbcustomizer-basic-tutorial.zip)

### Did this work correctly in an earlier version?

No / Don't know

### Operating System

Mac OS

### JDK

JDK 8

### Apache NetBeans packaging

Apache NetBeans provided installer

### Anything else

This happens every time I tried to download it.

It also happens when trying to download the zip for the Advanced Grid Bag tutorial

### Are you willing to submit a pull request?

No

Start with the linked Designing a Basic Java Form Using the GridBag Customizer tutorial and inspect its software resource link. Check the corresponding Advanced Grid Bag tutorial ZIP link as well; done means both resources download successfully instead of returning a page-not-found response.

Written by the indexing model from the issue text.