Simplify node#parent_directionality
diff --git a/html/semantics/forms/attributes-common-to-form-controls/dirname-rtl.html b/html/semantics/forms/attributes-common-to-form-controls/dirname-rtl-auto.html
similarity index 100%
rename from html/semantics/forms/attributes-common-to-form-controls/dirname-rtl.html
rename to html/semantics/forms/attributes-common-to-form-controls/dirname-rtl-auto.html