Issue #23921: Standardized documentation whitespace formatting.
Original patch by James Edwards.
diff --git a/Doc/tutorial/appendix.rst b/Doc/tutorial/appendix.rst
index e04459b..ffd16aa 100644
--- a/Doc/tutorial/appendix.rst
+++ b/Doc/tutorial/appendix.rst
@@ -92,7 +92,7 @@
    filename = os.environ.get('PYTHONSTARTUP')
    if filename and os.path.isfile(filename):
        with open(filename) as fobj:
-          startup_file = fobj.read()
+           startup_file = fobj.read()
        exec(startup_file)