Fixed minor typo in `nedsim` README.

diff --git a/nedsim/README.md b/nedsim/README.md
index b8507af..23c1760 100644 (file)
--- a/nedsim/README.md
+++ b/nedsim/README.md
@@ -22,7 +22,7 @@ Installation
 Use `make` and `make clean` to build/remove nedsim files. System installation
 requires manually copying the binary in to place.
 
-What configuration are available can be found as `#define`s at the top of the
+What configuration is available can be found as `#define`s at the top of the
 nedsim source code. This includes things like size of system RAM, number of
 hardware threads, etc.