Update README.md (#712)

lucasltv · web-flow · commit f682579c9f7c · 2022-02-17T11:29:35.000+01:00
reflect-metadata import adjust.
diff --git a/README.md b/README.md
@@ -84,8 +84,9 @@ You can use routing-controllers with [express.js][1] or [koa.js][2].
 
    and make sure to import it before you use routing-controllers:
 
-   ```typescript
-   ```
+```typescript
+  import "reflect-metadata";
+```
 
 3. Install framework:
 
