update HACKING file

[Ben Elliston]

Fairly obvious.

Cheers, Ben

---
 HACKING | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/HACKING b/HACKING
index 0005988..a894e1d 100644
--- a/HACKING
+++ b/HACKING
@@ -18,8 +18,8 @@ If a change fixes a test, mention the test in the ChangeLog 
entry.
 To this end, the Autotest-mode is handy.
 
 ** Bug reports
-If somebody reports a new bug, mention his name in the ChangeLog entry
-and in the test case you write.  Put him into THANKS.
+If somebody reports a new bug, mention their name in the ChangeLog
+entry and in the test case you write.  Put them into THANKS.
 
 The correct response to most actual bugs is to write a new test case
 which demonstrates the bug.  Then fix the bug, re-run the test suite,
-- 
1.9.1