pgsql: doc: Correct jsonpath string literal escapes description

doc: Correct jsonpath string literal escapes description

The paragraph describing the JavaScript string literals allowed in
jsonpath expressions unnecessarily mentions JSON by erroneously
listing \v as allowed by JSON and mentioning the \xNN and \u{N...}
backslash escapes as deviations from JSON when in fact both are
accepted by ECMAScript/JavaScript.  Fix this by only referring to
JavaScript.

Author: Erik Wienhold <ewie@ewie.name>
Discussion: https://www.postgresql.org/message-id/flat/1EB17DF9-2636-484B-9DD0-3CAB19C4F5C4@justatheory.com

Branch
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REL_16_STABLE

Details
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https://git.postgresql.org/pg/commitdiff/a7ed15f3ab8160d627e8281bd62a048a4fca371f

Modified Files
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doc/src/sgml/json.sgml | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)