add reference to the test file

Author: sandrabosk

README.md

@@ -61,7 +61,7 @@ lab-js-functions-and-arrays
       └── functions-and-arrays.spec.js
 ```
 
-We will be working with the `src/functions-and-arrays.js`. In the `jasmine` folder you can find all of the files needed to use Jasmine. All these files are already linked with the `SpecRunner.html` file.
+We will be working with the `src/functions-and-arrays.js`. In the `jasmine` folder you can find all of the files needed to use Jasmine. All these files are already linked with the `SpecRunner.html` file. In case you want to check the tests, they are in the `tests/functions-and-arrays.spec.js` file.
 
 #### Run tests