Update CONTRIBUTING.md
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index 39ecb1f..e1b8563 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -59,7 +59,7 @@
Building and running the code
-----------------------------
-Currently we support building on Linux only, for an Android target and for, for testing, a headless Linux
+Currently we support building on Linux only, for an Android target and, for running tests, a headless Linux
target. Building on MacOS for Android, iOS, and a headless MacOS target is coming soon.
### Android (cross-compiling from Mac or Linux)
