update variable name

ez_cite.py

@@ -1,6 +1,6 @@
 import os
 TOGETHER_API_KEY = os.environ.get("TOGETHER_API_KEY")
-SEMANTIC_SCHOLAR_API_KET = os.environ.get("SEMANTIC_SCHOLAR_API_KET")
+SEMANTIC_SCHOLAR_API_KEY = os.environ.get("SEMANTIC_SCHOLAR_API_KEY")
 import re
 import sys
 import time
@@ -103,7 +103,7 @@ def get_relevant_papers(search_query, sort=True, count=10):
     # Define the paper search endpoint URL; All keywords in the search query are matched against the paper’s title and abstract. 
     url = 'https://api.semanticscholar.org/graph/v1/paper/search'
     # Define headers with API key
-    headers = {'x-api-key': SEMANTIC_SCHOLAR_API_KET}
+    headers = {'x-api-key': SEMANTIC_SCHOLAR_API_KEY}
 
     query_params = {
         'query': search_query,