docs(recipes): update hot-reload.md

Author: Tony133

content/recipes/hot-reload.md

@@ -176,7 +176,3 @@ $ npm run start:dev
 #### Example
 
 A working example is available [here](https://github.com/nestjs/nest/tree/master/sample/08-webpack).
-
-#### TypeORM
-
-If you're using `@nestjs/typeorm`, you'll need to add `keepConnectionAlive: true` to your TypeORM configuration.