Remove incorrectly commented out css lines

Author: unixpi

docs/the_nimbus_book/custom.css

@@ -21,8 +21,7 @@
     --theme-popup-border: #cccccc;
     --theme-hover: #e6e6e6;
 
-    --quote-bg: rgb(250,250,250); //hsl(197, 37%, 96%);
-    --quote-border: //hsl(197, 37%, 91%);
+    --quote-bg: rgb(250,250,250); 
 
     --table-border-color: hsl(0, 0%, 95%);
     --table-header-bg: hsl(0, 0%, 80%);