chore(docs): Attempt to fix sass compilation issue

docs/assets/styles/_mixins.scss

@@ -36,17 +36,17 @@
         height: 10px;
     }
     &::-webkit-scrollbar-corner {
-        background-color: hsl(0 0% 90%);
+        background-color: #{'hsl(0 0% 90%)'};
     }
     &::-webkit-scrollbar-thumb {
-        background-color: hsl(0 0% 75%);
-        border: 2px solid hsl(0 0% 90%);
+        background-color: #{'hsl(0 0% 75%)'};
+        border: 2px solid #{'hsl(0 0% 90%)'};
         border-radius: 10px;
     }
     &::-webkit-scrollbar-thumb:hover {
-        background-color: hsl(0 0% 65%);
+        background-color: #{'hsl(0 0% 65%)'}
     }
     &::-webkit-scrollbar-track {
-        background-color: hsl(0 0% 90%);
+        background-color: #{'hsl(0 0% 90%)'}
     }
 }