$dropdown-link-hover-color uses color variable instead of $dropdown-link-color

Created by: robinheidrich

If you change the Sass variable $dropdown-link-color, you also have to change $dropdown-link-hover-color, because this variable uses $gray-900 instead of $dropdown-link-color. (Check here)

Currently:

$dropdown-link-color: $gray-900 !default;
$dropdown-link-hover-color: shade-color($gray-900, 10%) !default;

Corrected:

$dropdown-link-color: $gray-900 !default;
$dropdown-link-hover-color: shade-color($dropdown-link-color, 10%) !default;