REMIND: Fix bank holidays around Christmas

This involved using $Tw instead of $Uw. I am still not entirely sure
what the difference is except $Tw works.

Suggested here:
https://www.reddit.com/r/commandline/comments/j94qx4/help_using_remind_satisfy_option/g8hqz6g/?utm_source=reddit&utm_medium=web2x&context=3

remind/.local/share/remind/uk-hollidays.rem

@@ -47,13 +47,13 @@ REM 25 Dec MSG Christmas Day
 REM 26 Dec MSG Boxing Day
 # If Christmas day is on a Saturday, the following Monday and Tuesday will be
 # substitute bank holidays for Christmas and boxing day
-REM 27 Dec SATISFY [$Uw == 1] MSG Christmas Day (substitute bank holiday)
-REM 28 Dec SATISFY [$Uw == 2] MSG Boxing Day (substitute bank holiday)
+REM 27 Dec SATISFY [$Tw == 1] MSG Christmas Day (substitute bank holiday)
+REM 28 Dec SATISFY [$Tw == 2] MSG Boxing Day (substitute bank holiday)
 # If boxing day is a Saturday, the following Monday will be a bank holiday
-REM 28 Dec SATISFY [$Uw == 1] MSG Boxing Day (substitute bank holiday)
+REM 28 Dec SATISFY [$Tw == 1] MSG Boxing Day (substitute bank holiday)
 # Need to look into what happens if Christmas falls on a Sunday.
 # I expect Mon and Tues are both bank holidays
-REM 27 Dec SATISFY [$Uw == 2 ] MSG Christmas Day (substitute bank holiday)
+REM 27 Dec SATISFY [$Tw == 2 ] MSG Christmas Day (substitute bank holiday)
 
 
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