Changed example CLI options to point to build/coverage directory

Author: NicolaeIotu

tests/README.md

@@ -119,16 +119,14 @@ The HTML files can be viewed by opening **build/coverage/html/index.html** in yo
 Alternatively you can use the following command:
 
 ```console
-./phpunit --colors --coverage-text=tests/coverage.txt --coverage-html=tests/coverage/ -d memory_limit=1024m
+./phpunit --colors --coverage-text=build/coverage/text/coverage.txt --coverage-html=build/coverage/html/ -d memory_limit=1024m
 ```
 
 This runs all of the tests again collecting information about how many lines,
 functions, and files are tested. It also reports the percentage of the code that is covered by tests.
 It is collected in two formats: a simple text file that provides an overview as well
 as a comprehensive collection of HTML files that show the status of every line of code in the project.
 
-For the example above, the text file can be found at **tests/coverage.txt** and
-the HTML files can be viewed by opening **tests/coverage/index.html**.
 
 ## PHPUnit XML Configuration