fix passing the custom language

app.py

@@ -27,7 +27,7 @@ def extract_wikipedia_content(wiki_url, api_key, model_id, base_url, target_lang
     Function to extract content from Wikipedia URL (placeholder for now)
     """
     # Use custom language if selected
-    if target_lang == "custom" and custom_lang:
+    if target_lang == "Custom" and custom_lang:
         target_lang = custom_lang
         
     wiki_id = extract_wiki_id(wiki_url)
@@ -109,7 +109,7 @@ def translate_section(section_content, article_title, article_summary, content_f
         return "Please provide content and API key for translation.", None if debug_mode else None
     
     # Use custom language if selected
-    if target_lang == "custom" and custom_lang:
+    if target_lang == "Custom" and custom_lang:
         actual_lang = custom_lang
     else:
         actual_lang = target_lang