Doc: Improve documentation for pg_jit_available()

Per complaint from Scott Ribe. Based on wording suggestion from Tom Lane.

Discussion: https://postgr.es/m/1956E806-1468-4417-9A9D-235AE1D5FE1A@elevated-dev.com
Backpatch-through: 11, where pg_jit_available() was added

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 12a48f99266b0a70b13f91ca732f14d1400b26c9..230587eee47313eba0c0835f3682953fc936fb63 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -17408,9 +17408,9 @@ SELECT * FROM pg_ls_dir('.') WITH ORDINALITY AS t(ls,n);
       
        pg_jit_available()
        boolean
-       is JIT compilation available in this session
-       (see )? Returns false if 
-       linkend="guc-jit"/> is set to false.
+       is a JIT compiler extension available
+       (see ) and the 
+       configuration parameter set to on.