[FYI] Fix typo in gdb/NEWS

[Tom Tromey]

I noticed a typo in gdb/NEWS.  This fixes it.

gdb/ChangeLog
2019-05-27  Tom Tromey  <tom@tromey.com>

	* NEWS: Fix typo.
---
 gdb/ChangeLog | 4 ++++
 gdb/NEWS      | 2 +-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/gdb/NEWS b/gdb/NEWS
index 792548139e9..6546b7243a9 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -16,7 +16,7 @@
 
 * Support for Pointer Authentication on AArch64 Linux.
 
-* Two new convernience functions $_cimag and $_creal that extract the
+* Two new convenience functions $_cimag and $_creal that extract the
   imaginary and real parts respectively from complex numbers.
 
 * Python API
-- 
2.17.2