pgsql: Use E, not e, for escaping in example docs

Use E, not e, for escaping in example docs

From the Department of Nitpicking, be consistent with other escaping
and use 'E' instead of 'e' to escape the string in the example docs
for GET DISAGNOSTICS stack = PG_CONTEXT.

Noticed by Department Chief Magnus Hagander.

Branch
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master

Details
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http://git.postgresql.org/pg/commitdiff/00ba97365d356823c48c02147b4cd66f8f06b1d6

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