correct wikipedia reference link

Manually apply from PR#4579

tbrowder++

Author: coke

doc/Type/Dateish.rakudoc

@@ -183,7 +183,7 @@ say Date.today.yyyy-mm-dd("/");          # OUTPUT: «2020/03/14␤»
 =for code :ok-test<dd>
 method mm-dd-yyyy(str $sep = "-" --> Str:D)
 
-Returns the date in C<MM-DD-YYYY> format (L<ISO 8601|https://en.wikipedia.org/wiki/ISO_8601>).
+Returns the date in C<MM-DD-YYYY> format (L<Gregorian, month-day-year (MDY)|https://en.wikipedia.org/wiki/Calendar_date>).
 The optional positional argument C<$sep>, which defaults to C«-», is a one-character
 separator placed between the different parts of the date.
 
@@ -198,7 +198,7 @@ say Date.today.mm-dd-yyyy("/");          # OUTPUT: «03/14/2020␤»
 =for code :ok-test<dd>
 method dd-mm-yyyy(str $sep = "-" --> Str:D)
 
-Returns the date in C<DD-MM-YYYY> format (L<ISO 8601|https://en.wikipedia.org/wiki/ISO_8601>).
+Returns the date in C<DD-MM-YYYY> format (L<Gregorian, day-month-year (DMY)|https://en.wikipedia.org/wiki/Calendar_date>).
 The optional positional argument C<$sep>, which defaults to C«-», is a one-character
 separator placed between the different parts of the date.
 

xt/pws/words.pws

@@ -366,6 +366,7 @@ dividebyzero
 dl
 dll
 dmg
+dmy
 dns
 documenting's
 doesnotexist
@@ -776,6 +777,7 @@ maybevals
 mayspec
 mbc
 mbigint
+mdy
 memoized
 merelo
 metacharacter