some text updates

app.py

@@ -164,8 +164,8 @@ def main():
 
     st.write("### Older / Related Codes")
   
-    st.write(f"ISO 639-3 'alpha3' code, 'terminology' or 'T' variant (deprecated): {t_variant}")
-    st.write(f"ISO 639-3 'alpha3' code, 'bibliographic' or 'B' variant (deprecated): {b_variant}")
+    st.write(f"ISO 639-2 'alpha3' code, 'terminology' or 'T' variant (deprecated): {t_variant}")
+    st.write(f"ISO 639-2 'alpha3' code, 'bibliographic' or 'B' variant (deprecated): {b_variant}")
     
     # ethnologue prefers T for german (deu), and T for French
     st.write(f"If it exists, the ISO 639 Code Tables entry for the T variant would be at https://iso639-3.sil.org/code/{t_variant}. That is also the code variant that typically has a working link to Ethnologue.")
@@ -177,10 +177,10 @@ def main():
     t_obsolete_codes = pull_obsolete_codes(t_variant)
     b_obsolete_codes = pull_obsolete_codes(b_variant)   
     if t_obsolete_codes:
-      st.write(f"Obsolete codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{t_variant}:")
+      st.write(f"Older codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{t_variant}:")
       st.write(t_obsolete_codes)
     elif b_obsolete_codes:
-      st.write(f"Obsolete codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{b_variant}:")
+      st.write(f"Older codes from previous ISO-639 iterations, pulled from https://iso639-3.sil.org/code/{b_variant}:")
       st.write(b_obsolete_codes)
 
   st.write(f"### Glottolog")