Tweak

Author: javiereguiluz

service_container/tags.rst

@@ -115,8 +115,8 @@ If you want to apply tags automatically for your own services, use the
 
 .. caution::
 
-    If you're using PHP, you need to call ``instanceof`` before any service
-    registration to make sure tags are correctly applied.
+    If you're using PHP configuration, you need to call ``instanceof`` before
+    any service registration to make sure tags are correctly applied.
 
 It is also possible to use the ``#[AutoconfigureTag]`` attribute directly on the
 base class or interface::