more metadata fixes

Author: vivi

collections/soko-sijeni.yaml

@@ -6,7 +6,7 @@ items:
   - plaintext/2025/02/kalama-sakijape.md
   - plaintext/2025/02/o-lukin-e-kala.md
   - plaintext/2025/03/kalama-pi-kulupu-elopa.md
-  - plaintext/2025/03/open-ale.md
+  - plaintext/2025/03/open-lon.md
   - plaintext/2025/03/jan-kamela.md
   - plaintext/2025/04/o-utala.md
   - plaintext/2025/04/open-jan.md