Doc: use "an SQL" consistently rather than "a SQL"

Per the precedent set by 04539e73f, adjust article prefixes for "SQL" to
use "an" consistently rather than "a", i.e., "an es-que-ell" rather than
"a sequel".

Both of these are new to v18. Also see b1b13d2b5, d866f0374 and
7bdd489d3.

diff --git a/doc/src/sgml/ref/copy.sgml b/doc/src/sgml/ref/copy.sgml
index d6859276bed424546fac87e5ea1e0ff53ee3d6b2..8433344e5b6f5eb7f6db8145f73d5493c23a2cee 100644 (file)
--- a/doc/src/sgml/ref/copy.sgml
+++ b/doc/src/sgml/ref/copy.sgml
@@ -677,7 +677,7 @@ COPY count
     backward compatibility.  However, psql
     uses \. to terminate a COPY FROM
     STDIN operation (that is, reading
-    in-line COPY data in a SQL script).  In that
+    in-line COPY data in an SQL script).  In that
     context the rule is needed to be able to end the operation before the
     end of the script.
    
@@ -844,7 +844,7 @@ COPY count
     is not normally treated as special when reading CSV
     data.  An exception is that psql will terminate
     a COPY FROM STDIN operation (that is, reading
-    in-line COPY data in a SQL script) at a line containing
+    in-line COPY data in an SQL script) at a line containing
     only \., whether it is text or CSV
     mode.