documentclass{article}
usepackage{setspace}
usepackage{booktabs}
begin{document}
doublespacing
section{Text}
Test2\
Test1
section{Table}
    begin{tabular}{ll}
        toprule
        textbf{Key} & textbf{Value} \
        midrule
        Category & Line1 \
        LongLabel:  & Line2 \
        Category2: & Line1 \
                  & Line2 \
        bottomrule
    end{tabular}
end{document}