fix typos in NEWS file

NEWS

@@ -2,14 +2,14 @@ release/005.005 (2017-02-02)
 
     [kerberos] Add the option rdns_enabled so that Kerberos can be
     configured not to require clients to do a reverse DNS lookup on the
-    hostname of a service principal. The default is set to true, so
-    unless specifically overridden to false Kerberos
-    clients will behave as they always have. [adamhl]
+    hostname of a service principal. The default is set to true, so unless
+    specifically overridden to false Kerberos clients will behave as they
+    always have. [adamhl]
 
-    [kerberos] Chnage the master_kdc setting in krb5.conf to point to an
-    alias of the master (kerberos1). This will have not change how the
+    [kerberos] Change the master_kdc setting in krb5.conf to point to an
+    alias of the master (kerberos1). This will not change how the
     configuration works, but makes it easier to change the ordering of the
-    replicas if, in the future, we need to.
+    replicas if, in the future, we need to. [adamhl]
 
 release/005.004 (2017-01-09)