change subcategory listing ui (i still dont like it.. change later)

app/src/main/java/sh/sar/isodroid/ui/screens/DownloadsScreen.kt

@@ -223,27 +223,12 @@ private fun DownloadCategory(
 
 @Composable
 private fun SubcategoryHeader(title: String) {
-    Row(
-        modifier = Modifier
-            .fillMaxWidth()
-            .padding(horizontal = 16.dp, vertical = 12.dp),
-        verticalAlignment = Alignment.CenterVertically
-    ) {
-        HorizontalDivider(
-            modifier = Modifier.weight(1f),
-            color = MaterialTheme.colorScheme.outline.copy(alpha = 0.5f)
-        )
-        Text(
-            text = title,
-            style = MaterialTheme.typography.labelMedium,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
-            modifier = Modifier.padding(horizontal = 12.dp)
-        )
-        HorizontalDivider(
-            modifier = Modifier.weight(1f),
-            color = MaterialTheme.colorScheme.outline.copy(alpha = 0.5f)
-        )
-    }
+    Text(
+        text = title,
+        style = MaterialTheme.typography.labelMedium,
+        color = MaterialTheme.colorScheme.primary,
+        modifier = Modifier.padding(horizontal = 16.dp, vertical = 12.dp)
+    )
 }
 
 @Composable