fix indentation error in userguide

--HG--
extra : transplant_source : %7B%A4%F1%C4/%E4l%2C_%BFF%5B%B7%9C%9F%E0_%2B%15%3D

docs/src/userguide/language_basics.rst

@@ -79,7 +79,7 @@ can group them into a :keyword:`cdef` block like this::
         Spam *p
 
         void f(Spam *s):
-        print s.tons, "Tons of spam"
+            print s.tons, "Tons of spam"
 
 
 Python functions vs. C functions