No images in any of the GUI elements under System.Windows.Forms

### Type of issue

Typo

### Description

Documentation covering graphical user interface elements - even the most basic ones like Button, Checkbox, Form, Label, Listbox, MessageBox, PictureBox - are missing images that display an example of the element. Describing these is insufficient.

While I haven't done a definitive check of every single element, I'm yet to find a single GUI element under System.Windows.Forms that has an image showing what the element looks like.

### Page URL

https://learn.microsoft.com/en-us/dotnet/api/system.windows.forms.panel?view=windowsdesktop-9.0

### Content source URL

https://github.com/dotnet/dotnet-api-docs/blob/main/xml/System.Windows.Forms/Panel.xml

### Document Version Independent Id

6d67cdb7-4d31-f033-afd1-029817555df2

### Platform Id

1cb25b1d-073f-206c-3c24-ce22df6b3b25

### Article author

@dotnet-bot