feat: make shadow of <kbd>s look nicer

Author: r00ster91

lib/docs/index.html

@@ -348,7 +348,7 @@
         border-bottom-color: #c6cbd1;
         border: solid 0.0625em;
         border-radius: 0.1875em;
-        box-shadow: inset 0 -0.0625em 0 #c6cbd1;
+        box-shadow: inset 0 -0.2em 0 #c6cbd1;
         cursor: default;
       }