Please fix a typo

[Ineiev]

--- maintain.texi       1 Jun 2025 20:28:17 -0000       1.290
+++ maintain.texi       5 Jun 2025 17:10:22 -0000
@@ -1056,5 +1056,5 @@
 The text of the Creative Commons public licenses is dedicated to the public
 domain under the CC0 Public Domain Dedication.
-+@end smallexample
+@end smallexample