[master] 36225c0e3 doc: remove now invalid references

[Nils Goroll]

commit 36225c0e3a4f48bab10ebb93e6a183b9203a242b
Author: Nils Goroll <nils.goroll at uplex.de>
Date:   Fri Jul 4 19:23:23 2025 +0200

    doc: remove now invalid references
    
    Ref 337e95a1de25884cfc135a9447048c918ff4bd63

diff --git a/doc/sphinx/whats-new/upgrading-6.2.rst b/doc/sphinx/whats-new/upgrading-6.2.rst
index 84f64fb17..e01f32b25 100644
--- a/doc/sphinx/whats-new/upgrading-6.2.rst
+++ b/doc/sphinx/whats-new/upgrading-6.2.rst
@@ -86,10 +86,10 @@ but the following differences should be noted:
 The following functions are deprecated and should be replaced by the
 new conversion functions:
 
-* :ref:`std.real2integer()`
-* :ref:`std.real2time()`
-* :ref:`std.time2integer()`
-* :ref:`std.time2real()`
+* ``std.real2integer()``
+* ``std.real2time()``
+* ``std.time2integer()``
+* ``std.time2real()``
 
 They will be removed in a future version of Varnish.