Update content/security/helmet.md

Author: kamilmysliwiec

content/security/helmet.md

@@ -20,7 +20,7 @@ import * as helmet from 'helmet';
 app.use(helmet());
 ```
 
-> info **Hint** If you are getting a `This expression is not callable` error while trying to import `Helmet`, you very likely have the `allowSyntheticDefaultImports` and `esModuleInterop` options set to `true` in your project's `tsconfig.json` file. If that's the case, change the import statement to: `import helmet from 'helmet'` instead.
+> info **Hint** If you are getting the `This expression is not callable` error while trying to import `Helmet`, you very likely have the `allowSyntheticDefaultImports` and `esModuleInterop` options set to `true` in your project's `tsconfig.json` file. If that's the case, change the import statement to: `import helmet from 'helmet'` instead.
 
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