FLUT-979460 - [Others] Updated Flutter SDK version compatibility in user guide#1344

Mugunthan-Ramalingam wants to merge 1 commit intodevelopmentsyncfusion-content/flutter-docs:developmentfrom

FLUT-979460-version-compatibility-devsyncfusion-content/flutter-docs:FLUT-979460-version-compatibility-devCopy head branch name to clipboard