Update custom-build.mdx

Author: mythz

content/docs/deployment/custom-build.mdx

@@ -68,7 +68,7 @@ For a custom build set the `EXTENSIONS` environment variable to a comma separate
 EXTENSIONS="providers,app,tools" ./build.sh
 ```
 
-> Including any extension that requires a UI will automatically include it in the build.
+<Info>Including any extension that requires a UI will automatically include it in the build.</Info>
 
 ### Add external extensions