fix Mux bug not matching paths correctly; httpraw HTTP V1 naming applied

http/httphi/httphi_fuzz_test.go

@@ -64,7 +64,7 @@ const (
 
 // segSizes are the chunk sizes a request may be delivered in, index 0 meaning
 // "all at once". Splitting a request mid-CRLF or before a colon is what drives
-// [httpraw.Header.TryParse]'s resumption path. Entries may be appended, never
+// [httpraw.HeaderV1.TryParse]'s resumption path. Entries may be appended, never
 // changed: an existing index must keep splitting exactly as it does today.
 var segSizes = [16]int{0, 1, 2, 3, 5, 7, 11, 16, 23, 37, 64, 101, 173, 256, 509, 1024}
 
@@ -152,7 +152,7 @@ func checkResponse(t *testing.T, written string) {
 	if !strings.Contains(written, "\r\n\r\n") {
 		t.Fatalf("header block never terminated: %q", written)
 	}
-	var resp httpraw.Header
+	var resp httpraw.HeaderV1
 	const asResponse = true
 	if err := resp.ParseBytes(asResponse, []byte(written)); err != nil {
 		t.Fatalf("response does not parse back: %s in %q", err, written)