Update app.py

app.py

@@ -90,7 +90,7 @@ if lang is not None:
   st.write(f"If it exists, the ISO 639 Code Tables entry for the B variant would be at https://iso639-3.sil.org/code/{b_variant}")  
   obsolete_codes = pull_obsolete_codes(t_variant)
   if obsolete_codes:
-    st.write(f"Obsolete codes from previous ISO-639 iterations:")
+    st.write(f"Obsolete codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{t_variant}:")
     st.write(obsolete_codes)