Update wordpress-coding-standards/php.md

Co-authored-by: Juliette <[email protected]>

wordpress-coding-standards/php.md

@@ -366,7 +366,7 @@ $a = foo(
 );
 ```
 
-### Trait Formatting
+### Trait Use statements
 
 Trait `use` statements should be at the top of a class and should have exactly one blank line before the first `use` statement, and at least one blank line after. The only exception is when the class only contains the trait `use` statement, in which case the blank line after may be omitted.