pgsql: docs: remove "III" version text from pgAdmin link

docs: remove "III" version text from pgAdmin link

Reported-by: vodevsh@gmail.com

Discussion: /messages/by-id/152404286919.19366.7988650271505173666@wrigleys.postgresql.org

Backpatch-through: 9.3

Branch
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REL9_3_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/1c66ee81febec2f0aa7fd0c3f2d5f70995542d30

Modified Files
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doc/src/sgml/external-projects.sgml | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)