minor #20333 Fix parameter name in registerAttributeForAutoconfiguration example (andersonamuller)

This PR was merged into the 5.4 branch.

Discussion
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Fix parameter name in `registerAttributeForAutoconfiguration` example

Commits
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dfa089c Fix parameter name in `registerAttributeForAutoconfiguration` example

Author: OskarStark

service_container/tags.rst

@@ -250,7 +250,7 @@ call to support ``ReflectionMethod``::
                 // update the union type to support multiple types of reflection
                 // you can also use the "\Reflector" interface
                 \ReflectionClass|\ReflectionMethod $reflector): void {
-                    if ($reflection instanceof \ReflectionMethod) {
+                    if ($reflector instanceof \ReflectionMethod) {
                         // ...
                     }
                 }