chore: reduce side item padding

Author: ymkiux

web-ui/styles/layout-shell.css

@@ -322,7 +322,7 @@ body::after {
 .side-item {
     width: 100%;
     text-align: left;
-    padding: 7px 10px;
+    padding: 5px;
     border-radius: 8px;
     border: 1px solid transparent;
     background: transparent;
@@ -336,10 +336,6 @@ body::after {
     position: relative;
 }
 
-#side-tab-docs {
-    padding: 6px 10px;
-}
-
 .side-item::before {
     content: "";
     position: absolute;