Add Contributor credit

app.py

@@ -283,6 +283,7 @@ st.markdown(f'<style>[data-testid="stChatMessageContent"] .st-emotion-cache-cnbv
 
 # Change icon size
 # (CSS element names may be subject to change.)
+# (Contributor: ★31 >>538)
 AVATAR_SIZE_STYLE = f"""
                 <style>
                     [data-testid="chatAvatarIcon-user"] {{