fix: prevent scrollbar-x from appearing on small screens

Author: alsolovyev

src/frontend/styles/layout.pcss

@@ -8,6 +8,7 @@
 
 .docs {
   min-height: calc(100vh - var(--layout-height-header));
+  overflow-x: hidden;
 
   @media (--desktop) {
     display: flex;