Multicolor gradients in Release Notes 7.6

[Regina Henschel]

Hi all,

LibreOffice 7.6 has the new feature "Multicolor gradient". I have added 
an item about that to the section Core/General in the Release Notes [1].

This text contains links to the files 
InfoPresentation_MultiColor_Gradients_LO76.odp and MacrosForMCGR.odp.

It would be nice if these two files are reviewed. Please improve any 
errors you find or notify me.

[1] https://wiki.documentfoundation.org/ReleaseNotes/7.6/en#Core_/_General

Kind regards,
Regina