Fix citation generation by trimming whitespace and update example ID

fetch_arxiv_data.py

@@ -28,9 +28,9 @@ def generate_citation(id):
         doi = fetch_pmc_doi(id)
     else:
         doi = fetch_arxiv_doi(id)
-    citation = fetch_citation(doi).replace('\n', ' ').replace('<i>', '').replace('</i>', '')
+    citation = fetch_citation(doi).replace('\n', ' ').replace('<i>', '').replace('</i>', '').strip()
     return citation
 
 if __name__ == '__main__':
-    citation = generate_citation('2412.14338')
+    citation = generate_citation('2105.03824')
     print(citation)