NEWS: expand GnuPG related NEWS item

Basically transcribe a bit more of the corresponding commit message.

diff --git a/NEWS b/NEWS
index c52b674628ed6ecac3b6221d0e83d2b1b00ec536..06b73de1117a0289b0d0d240fb898809e0d74593 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -4,7 +4,8 @@ Notmuch 0.40 (UNRELEASED)
 General
 -------
 
-Accept "key-missing" from a signature from a revoked key
+Accept "key-missing" from a signature from a revoked key to match
+apparent change in GnuPG behaviour.
 
 Library
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