Blazer Demo. Broken links to some documentation

[viordash]

Hi!
Minor issues with several links to documentation at Radzen Blazor Components page in the DataGrid section, e.g:

• https://www.radzen.com/documentation/blazor/datagridsimplefilter/
• https://www.radzen.com/documentation/blazor/datagridmultiplesort/

[enchev]

Thanks! We will fix them later today.