Correct two typos in NEWS

Author: eddelbuettel

inst/NEWS.Rd

@@ -20,12 +20,12 @@
     \item The package skeleton generator has been updated and no longer sets
     an Imports:.
     \item Some README.md URLs and badged have been updated.
-    \item The use of \code{-fopenmo} has been documented in \code{Makevars},
+    \item The use of \code{-fopenmp} has been documented in \code{Makevars},
     and a simple thread-count reporting function has been added.
     \item The old manual \code{src/init.c} has been replaced by an
     autogenerated version, the \code{RcppExports} file have regenerated
     \item The interface to package \pkg{Matrix} has been updated and
-    simplified thanks to excllent patch by Mikael Jagan.
+    simplified thanks to an excllent patch by Mikael Jagan.
     \item The new upload is coordinated with packages \pkg{lme4} and \pkg{OpenMx}.
   }
 }