Update instructions

README.md

@@ -29,7 +29,7 @@ vendor/bin/phpunit --time-report
 # How to partition your tests
 Once you have run your tests, you can partition them by running the following command:
 ```
-vendor/bin/testsuitearchitect --partition {number of partitions}
+vendor/bin/testsuitearchitect partition number={number of partitions}
 ```
 This will create and store x number of test suites in the `.test-suite-architect/test-suites` directory.\
 To import the new test suites in your PHPUnit configuration file, you can use the `xi:include` directive.\