updates hex code

Author: ZPain8464

src/theme/Admonition/styles.module.css

@@ -9,7 +9,7 @@
 [data-theme='dark'] .enterprise {
   border-color: #612fea;
   border-left-color: #ece5ff;
-  background-color: #7161ef;
+  background-color: #4d25bb;
 }
 
 .enterprise > :last-child {