Update filenames

A filename should be matched to a spec name.

test/test.css

@@ -638,58 +638,58 @@
   scroll-margin-inline: auto;
 }
 
-.selectors:target,
-.selectors:enabled,
-.selectors:disabled,
-.selectors:checked,
-.selectors:indeterminate,
-.selectors:root,
-.selectors:empty,
-.selectors:last-child,
-.selectors:last-of-type,
-.selectors:first-of-type,
-.selectors:only-child,
-.selectors:only-of-type,
-.selectors:nth-child(2n+1),
-.selectors:nth-last-child(-n+2),
-.selectors:nth-of-type(2n+1),
-.selectors:nth-last-of-type(n+2),
-.selectors:not([DISABLED]) {
+.selectors-3:target,
+.selectors-3:enabled,
+.selectors-3:disabled,
+.selectors-3:checked,
+.selectors-3:indeterminate,
+.selectors-3:root,
+.selectors-3:empty,
+.selectors-3:last-child,
+.selectors-3:last-of-type,
+.selectors-3:first-of-type,
+.selectors-3:only-child,
+.selectors-3:only-of-type,
+.selectors-3:nth-child(2n+1),
+.selectors-3:nth-last-child(-n+2),
+.selectors-3:nth-of-type(2n+1),
+.selectors-3:nth-last-of-type(n+2),
+.selectors-3:not([DISABLED]) {
   display: auto;
 }
 
-.selectors4 | h1,
-.selectors4:scope,
-.selectors4:current,
-.selectors4:past,
-.selectors4:future,
-.selectors4:default,
-.selectors4:valid,
-.selectors4:invalid,
-.selectors4:required,
-.selectors4:optional,
-.selectors4:blank,
-.selectors4:any-link,
-.selectors4:local-link,
-.selectors4:read-only,
-.selectors4:read-write,
-.selectors4:placeholder-shown,
-.selectors4:in-range,
-.selectors4:out-of-range,
-.selectors4:user-invalid,
-.selectors4:matches(:hover, :focus),
-.selectors4:dir(ltr),
-.selectors4:local-link(0),
-.selectors4:current(p, li, dt, dd),
-.selectors4:nth-col(2n+1),
-.selectors4:nth-last-col(-n+2),
-.selectors4:target-within,
-.selectors4:focus-within,
-.selectors4:focus-visible,
-.selectors4:playing,
-.selectors4:paused,
-.selectors4:has(> img),
-.selectors4:drop(active) {
+.selectors-4 | h1,
+.selectors-4:scope,
+.selectors-4:current,
+.selectors-4:past,
+.selectors-4:future,
+.selectors-4:default,
+.selectors-4:valid,
+.selectors-4:invalid,
+.selectors-4:required,
+.selectors-4:optional,
+.selectors-4:blank,
+.selectors-4:any-link,
+.selectors-4:local-link,
+.selectors-4:read-only,
+.selectors-4:read-write,
+.selectors-4:placeholder-shown,
+.selectors-4:in-range,
+.selectors-4:out-of-range,
+.selectors-4:user-invalid,
+.selectors-4:matches(:hover, :focus),
+.selectors-4:dir(ltr),
+.selectors-4:local-link(0),
+.selectors-4:current(p, li, dt, dd),
+.selectors-4:nth-col(2n+1),
+.selectors-4:nth-last-col(-n+2),
+.selectors-4:target-within,
+.selectors-4:focus-within,
+.selectors-4:focus-visible,
+.selectors-4:playing,
+.selectors-4:paused,
+.selectors-4:has(> img),
+.selectors-4:drop(active) {
   display: auto;
 }