[exim-cvs] Docs: update for constification

Gitweb: https://git.exim.org/exim.git/commitdiff/513ea57aae151098dad2df9d05a3b495de3aac48

Commit:     513ea57aae151098dad2df9d05a3b495de3aac48
Parent:     ecb371298ce4ab016d055de06cff252098e6e603
Author:     Jeremy Harris <jgh146exb@???>
AuthorDate: Mon Sep 20 22:19:59 2021 +0100
Committer:  Jeremy Harris <jgh146exb@???>
CommitDate: Mon Sep 20 22:21:47 2021 +0100

    Docs: update for constification

    Broken-by: ecb371298c
---
 doc/doc-docbook/spec.xfpt | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt
index 3691b8b..812924a 100644
--- a/doc/doc-docbook/spec.xfpt
+++ b/doc/doc-docbook/spec.xfpt
@@ -35384,8 +35384,10 @@ discussed below.
.vitem &*header_line&~*header_last*&
A pointer to the last of the header lines.

-.vitem &*uschar&~*headers_charset*&
+.new
+.vitem &*const&~uschar&~*headers_charset*&
The value of the &%headers_charset%& configuration option.
+.wen

.vitem &*BOOL&~host_checking*&
This variable is TRUE during a host checking session that is initiated by the