Update components/phpunit_bridge.rst

Co-authored-by: Oskar Stark <oskarstark@googlemail.com>

Author: noniagriconomie

components/phpunit_bridge.rst

@@ -165,7 +165,7 @@ Deprecation notices can be triggered by using::
 
     @trigger_error('Your deprecation message', E_USER_DEPRECATED);
 
-You can also require the `symfony/deprecation-contracts` that provide the global
+You can also require the ``symfony/deprecation-contracts`` that provide the global
 function `trigger_deprecation()` for this usage.
 
 Without the `@-silencing operator`_, users would need to opt-out from deprecation