Ajout des flèches sur les programmes dans un diplôme (#918)

assets/sass/_theme/sections/diplomas.sass

@@ -95,8 +95,14 @@ ul.diplomas
             align-items: start
             position: relative
             a.title
+                @include icon(arrow-right-line, after, true)
+                    opacity: 0
+                    transition: opacity 0.55s
                 @include stretched-link(before)
                 position: initial
+                &:hover
+                    &::after
+                        opacity: 1
                 @include media-breakpoint-down(desktop)
                     margin-right: $spacing-2
                     &::after

assets/sass/_theme/utils/icons.sass

@@ -59,7 +59,7 @@
                 border-color: transparent
                 color: var(--color-background)
 
-@mixin arrow-right-hover($target: &, $size: pxToRem(40))
+@mixin arrow-right-hover($target: "&", $size: pxToRem(40))
     #{$target}
         position: relative
         display: flex