style: darken section-code background for better contrast

Author: nextlevelshit

src/main.css

@@ -92,7 +92,7 @@ body {
     font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
     font-size: 0.875rem;
     color: var(--color-text-muted);
-    background: var(--color-code-bg);
+    background: #e8e8ea;
     padding: 0.5rem 0.75rem;
     border-radius: 6px;
     margin-bottom: 1rem;