Thread: pgsql: doc: remove URL for ICU explorer/locexp

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 only (missed in previous commit)

Branch
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REL_10_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/9cb9c91460c424bb5b856e3e09b59e55854a0293

Modified Files
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doc/src/sgml/charset.sgml | 10 +++-------
1 file changed, 3 insertions(+), 7 deletions(-)