refactor(Sidebar): improve scss variables names

Author: mrholek

scss/_variables.scss

@@ -1716,8 +1716,8 @@ $sidebar-toggler-indicator-height:         3rem !default;
 $sidebar-toggler-indicator-color:          $gray-600 !default;
 $sidebar-toggler-indicator-icon:           url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 11 14'%3E%3Cpath fill='#{$sidebar-toggler-indicator-color}' d='M9.148 2.352l-4.148 4.148 4.148 4.148q0.148 0.148 0.148 0.352t-0.148 0.352l-1.297 1.297q-0.148 0.148-0.352 0.148t-0.352-0.148l-5.797-5.797q-0.148-0.148-0.148-0.352t0.148-0.352l5.797-5.797q0.148-0.148 0.352-0.148t0.352 0.148l1.297 1.297q0.148 0.148 0.148 0.352t-0.148 0.352z'/%3E%3C/svg%3E") !default;
 $sidebar-toggler-hover-bg:                 rgba(0, 0, 0, .3) !default;
-$sidebar-toggler-hover-indicator-color:    $sidebar-nav-link-hover-color !default;
-$sidebar-toggler-hover-indicator-icon:     url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 11 14'%3E%3Cpath fill='#{$sidebar-toggler-hover-indicator-color}' d='M9.148 2.352l-4.148 4.148 4.148 4.148q0.148 0.148 0.148 0.352t-0.148 0.352l-1.297 1.297q-0.148 0.148-0.352 0.148t-0.352-0.148l-5.797-5.797q-0.148-0.148-0.148-0.352t0.148-0.352l5.797-5.797q0.148-0.148 0.352-0.148t0.352 0.148l1.297 1.297q0.148 0.148 0.148 0.352t-0.148 0.352z'/%3E%3C/svg%3E") !default;
+$sidebar-toggler-indicator-hover-color:    $sidebar-nav-link-hover-color !default;
+$sidebar-toggler-indicator-hover-icon:     url("data:image/svg+xml;charset=utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 11 14'%3E%3Cpath fill='#{$sidebar-toggler-indicator-hover-color}' d='M9.148 2.352l-4.148 4.148 4.148 4.148q0.148 0.148 0.148 0.352t-0.148 0.352l-1.297 1.297q-0.148 0.148-0.352 0.148t-0.352-0.148l-5.797-5.797q-0.148-0.148-0.148-0.352t0.148-0.352l5.797-5.797q0.148-0.148 0.352-0.148t0.352 0.148l1.297 1.297q0.148 0.148 0.148 0.352t-0.148 0.352z'/%3E%3C/svg%3E") !default;
 // scss-docs-end sidebar-variables
 
 // Footer

scss/sidebar/_sidebar.scss

@@ -203,7 +203,7 @@
   &:hover {
     background-color: var(--#{$variable-prefix}sidebar-toggler-hover-bg, $sidebar-toggler-hover-bg);
     &::before {
-      background-image: var(--#{$variable-prefix}sidebar-toggler-hover-indicator, escape-svg($sidebar-toggler-hover-indicator-icon));
+      background-image: var(--#{$variable-prefix}sidebar-indicator-toggler-hover-icon, escape-svg($sidebar-toggler-indicator-hover-icon));
     }
   }