NEWS: fix typo: s/an prefix/a prefix/

diff --git a/etc/NEWS b/etc/NEWS
index aaeeed4..9f5595a 100644 (file)
--- a/etc/NEWS
+++ b/etc/NEWS
@@ -493,7 +493,7 @@ between applications.
 To inhibit this, change `x-select-enable-clipboard-manager' to nil.
 
 ** New command `rectangle-number-lines', bound to `C-x r N', numbers
-the lines in the current rectangle.  With an prefix argument, this
+the lines in the current rectangle.  With a prefix argument, this
 prompts for a number to count from and for a format string.
 
 ** The command shell prompts for the shell path name, when the default