fileupload missing import in documentation

[andonary]

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hi there,

this is not a big issue but I think the documentation should mention to import HttpClientModule from @angular inside the documentation :
https://primefaces.org/primeng/showcase/#/fileupload

There is no mention of importing in app.module we should import HttpClientModule. If it is not present, nothing is displayed.

• Angular version: 11.0.2
• PrimeNG version: 5.X
• Browser: [Safari]
• Language: [TypeScript 4.0.2]