docs: update docs icons (#12465)

### What problem does this PR solve?

Update icons for docs.
Trailing spaces are auto truncated by the editor, does not affect real
content.

### Type of change

- [x] Documentation Update

docs/develop/_category_.json

@@ -4,5 +4,8 @@
   "link": {
     "type": "generated-index",
     "description": "Guides for hardcore developers"
+  },
+  "customProps": {
+    "sidebarIcon": "LucideWrench"
   }
 }