Correct print() calls to print a blank line in various test cases
diff --git a/Lib/test/test_httpservers.py b/Lib/test/test_httpservers.py
index 1b6339d..11f0d5d 100644
--- a/Lib/test/test_httpservers.py
+++ b/Lib/test/test_httpservers.py
@@ -442,7 +442,7 @@
 import os
 
 print("Content-type: text/html")
-print()
+print("")
 
 print(os.environ["%s"])
 """