Move around example in to_bytes() to avoid confusion (python#101595)

Moves an example to be closer to the sentence that refers to it.

Doc/library/stdtypes.rst

@@ -530,12 +530,14 @@ class`. In addition, it provides a few more methods:
     is ``False``.
 
     The default values can be used to conveniently turn an integer into a
-    single byte object.  However, when using the default arguments, don't try
-    to convert a value greater than 255 or you'll get an :exc:`OverflowError`::
+    single byte object::
 
         >>> (65).to_bytes()
         b'A'
 
+    However, when using the default arguments, don't try
+    to convert a value greater than 255 or you'll get an :exc:`OverflowError`.
+
     Equivalent to::
 
         def to_bytes(n, length=1, byteorder='big', signed=False):