add challenge's description

components/challenge_page.py

@@ -127,7 +127,7 @@ def get_description(gr):
         gr.Markdown(CHALLENGE_DESCRIPTION_1)
         gr.DownloadButton(
             label="📥 Download Template",
-            value="submission/submission_template.xlsx",
+            value="components/submission/submission_template.xlsx",
             variant="secondary",
         )
         gr.Markdown(CHALLENGE_DESCRIPTION_2)