chore: Update PHP_CodeSniffer repository link (#24)

Author: rodrigoprimo

README.md

@@ -124,7 +124,7 @@ A number of **parsers** have been implemented. Some **parsers** can parse output
 | [_MyPy_](https://pypi.python.org/pypi/mypy-lang)                                      | `MYPY`               | 
 | [_NullAway_](https://github.com/uber/NullAway)                                        | `GOOGLEERRORPRONE`   | Same format as Google Error Prone.
 | [_PCLint_](http://www.gimpel.com/html/pcl.htm)                                        | `PCLINT`             | PC-Lint using the same output format as the Jenkins warnings plugin, [_details here_](https://wiki.jenkins.io/display/JENKINS/PcLint+options)
-| [_PHPCS_](https://github.com/squizlabs/PHP_CodeSniffer)                               | `CHECKSTYLE`         | With `phpcs api.php --report=checkstyle`.
+| [_PHPCS_](https://github.com/PHPCSStandards/PHP_CodeSniffer)                               | `CHECKSTYLE`         | With `phpcs api.php --report=checkstyle`.
 | [_PHPPMD_](https://phpmd.org/)                                                        | `PMD`                | With `phpmd api.php xml ruleset.xml`.
 | [_PMD_](https://pmd.github.io/)                                                       | `PMD`                | 
 | [_Pep8_](https://github.com/PyCQA/pycodestyle)                                        | `FLAKE8`             |