Doc: fix incorrect bit-reversal in example of macaddr formatting.

Will Mortensen (minor additional copy-editing by me)

Discussion: https://postgr.es/m/CAMpnoC5Y6jiZHSA82FG+e_AqkwMg-i94EYqs1C_9kXXFc3_3Yw@mail.gmail.com

doc/src/sgml/datatype.sgml

@@ -3819,13 +3819,13 @@ SELECT person.name, holidays.num_weeks FROM person, holidays
     </para>
 
     <para>
-     IEEE Std 802-2001 specifies the second shown form (with hyphens)
+     IEEE Standard 802-2001 specifies the second form shown (with hyphens)
      as the canonical form for MAC addresses, and specifies the first
-     form (with colons) as the bit-reversed notation, so that
-     08-00-2b-01-02-03 = 01:00:4D:08:04:0C.  This convention is widely
+     form (with colons) as used with bit-reversed, MSB-first notation, so that
+     08-00-2b-01-02-03 = 10:00:D4:80:40:C0.  This convention is widely
      ignored nowadays, and it is relevant only for obsolete network
      protocols (such as Token Ring).  PostgreSQL makes no provisions
-     for bit reversal, and all accepted formats use the canonical LSB
+     for bit reversal; all accepted formats use the canonical LSB
      order.
     </para>