set terse to True when calling platform.platform in test.pythoninfo (GH-7797)

diff --git a/Lib/test/pythoninfo.py b/Lib/test/pythoninfo.py
index 9242a36..4a563e9 100644
--- a/Lib/test/pythoninfo.py
+++ b/Lib/test/pythoninfo.py
@@ -142,7 +142,7 @@
     info_add('platform.python_implementation',
              platform.python_implementation())
     info_add('platform.platform',
-             platform.platform(aliased=True))
+             platform.platform(aliased=True, terse=True))
 
 
 def collect_locale(info_add):