Fixed updated e2e curl program test

Author: IsaacShelton

tests/e2e/e2e-runner.py

@@ -366,7 +366,7 @@ def run_all_tests():
         [executable,
         join(src_dir, "z_curl/main.adept"),
         "-e"],
-        lambda output: b"User-Agent: *" in output and b"Sitemap: https://www.google.com/sitemap.xml" in output,
+        lambda output: b"User-agent: *" in output and b"Sitemap: https://www.google.com/sitemap.xml" in output,
         expected_exitcode=0)
 
 e2e_framework_run(run_all_tests)