Doc: manually break lines in wide UUID examples.

Buildfarm member crake has been complaining "WARNING: The contents of
fo:inline line 1 exceed the available area in the inline-progression
direction by 20500 millipoints. (See position 23808:106)" since
ba57dcfdc went in.  The other doc-building animals are not showing
this warning, and I don't see it on my RHEL8 workstation either, but
I was able to reproduce it on a Fedora 41 box.  So apparently this
is due to a recent-ish change in DocBook's line-breaking heuristics,
which caused it to cope less well with the UUIDs in these examples.
Put in some zero-width spaces to encourage the PDF toolchain to
break these lines in a better place.  (Only one of these examples
actually needs this today, but I marked up all three to ensure that
they get wrapped in a consistent way.)

diff --git a/doc/src/sgml/func.sgml b/doc/src/sgml/func.sgml
index 1c3810e1a046e0cf999dcb0ce609d83e6414a350..2ab5661602c981c839f8cc8c27c27bc43111a7e1 100644 (file)
--- a/doc/src/sgml/func.sgml
+++ b/doc/src/sgml/func.sgml
@@ -14478,7 +14478,7 @@ CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple
         UUID.
        </para>
        <para>
-        <literal>uuid_extract_timestamp('019535d9-3df7-79fb-b466-fa907fa17f9e'::uuid)</literal>
+        <literal>uuid_extract_timestamp('019535d9-3df7-79fb-b466-&zwsp;fa907fa17f9e'::uuid)</literal>
          <returnvalue>2025-02-23 21:46:24.503-05</returnvalue>
        </para>
       </entry>
@@ -14498,11 +14498,11 @@ CREATE TYPE rainbow AS ENUM ('red', 'orange', 'yellow', 'green', 'blue', 'purple
         return 4.
        </para>
        <para>
-        <literal>uuid_extract_version('41db1265-8bc1-4ab3-992f-885799a4af1d'::uuid)</literal>
+        <literal>uuid_extract_version('41db1265-8bc1-4ab3-992f-&zwsp;885799a4af1d'::uuid)</literal>
         <returnvalue>4</returnvalue>
        </para>
        <para>
-        <literal>uuid_extract_version('019535d9-3df7-79fb-b466-fa907fa17f9e'::uuid)</literal>
+        <literal>uuid_extract_version('019535d9-3df7-79fb-b466-&zwsp;fa907fa17f9e'::uuid)</literal>
         <returnvalue>7</returnvalue>
        </para>
       </entry>