fix: Fix the overllaping LLMButtons dropdown

Author: birosrichard

website/src/components/LLMButtons.module.css

@@ -66,7 +66,7 @@
   .menuDropdown {
     position: absolute;
     right: 0;
-    margin-top: 0.5rem;
+    top: calc(100% + 0.5rem); 
     padding: 0.375rem;
     border-radius: 0.75rem;
     border: 1px solid var(--color-separator);