doc: remove URL for ICU explorer/locexp

Bruce Momjian <bruce@momjian.us>

Commit: 36b58ac6f6d0c4ce51ffb413ba376c2e8f95126f
Author: Bruce Momjian <bruce@momjian.us>
Date: 2021-10-04T21:10:59Z
Releases: 12.9
doc:  remove URL for ICU explorer/locexp

The old URL was HTTP 404 and the git link didn't build.  Also update two
other ICU links.  If we ever get a good link we will add it back.

Reported-by: Anton Voloshin

Author: Laurenz Albe

Backpatch-through: 10

Files

PathChange+/−
doc/src/sgml/charset.sgml modified +3 −7

Documentation touched