NEWS: minor fix

Signed-off-by: Stefano Lattarini <stefano.lattarini@gmail.com>

NEWS

diff --git a/NEWS b/NEWS
index 35244ab..d67407f 100644
--- a/NEWS
+++ b/NEWS
@@ -66,6 +66,8 @@
   - Warnings in the 'obsolete' category are enabled by default both in
     automake and aclocal.
 
+* Miscellaneous changes:
+
   - Some testsuite weaknesses and spurious failures have been fixed.
 
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