docs: update index.rst (#39)

Author: keradus

index.rst

@@ -10,7 +10,7 @@ projects. This tool not only detects them, but also fixes them for you.
 PHP CS Fixer has built-in rule sets, whether you want to follow PHP coding standards as defined by `PHP-FIG's PER Coding Style <https://www.php-fig.org/per/coding-style/>`__,
 a wide community like the `Symfony <https://symfony.com/doc/current/contributing/code/standards.html>`__,
 or `our opinionated one <./doc/ruleSets/PhpCsFixer.rst>`__.
-You can **also** define your (team's) style through the `configuration file <./doc/config.rst>`__.
+You can also define your (team's) style through the `configuration file <./doc/config.rst>`__.
 
 PHP CS Fixer can not only unify the style of your code, but also help to modernize your codebase towards
 newer PHP (e.g. `@PHP85Migration <./doc/ruleSets/PHP85Migration.rst>`__) and newer PHPUnit (e.g. `@PHPUnit91Migration:risky <./doc/ruleSets/PHPUnit91MigrationRisky.rst>`__).