Docs: Document to_*() Julian values are integers

Backpatch to 9.3.
Per request from Marc Dahn

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 0f35355f29d9f508873767238f9e953db77a0738..a48c83c68796c49e5f5139b57b8df02311c431dc 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -5623,7 +5623,7 @@ SELECT SUBSTRING('XY1234Z', 'Y*?([0-9]{1,3})');
        </row>
        <row>
         <entry><literal>J</literal></entry>
-        <entry>Julian Day (days since November 24, 4714 BC at midnight)</entry>
+        <entry>Julian Day (integer days since November 24, 4714 BC at midnight)</entry>
        </row>
        <row>
         <entry><literal>Q</literal></entry>