Fix markdown
diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index dd7b899..85d1a07 100644
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -42,14 +42,14 @@
### Android (cross-compiling from Mac or Linux)
-## The first time
+#### The first time
* `./tools/android/download_android_tools.py`
* On Linux: `sudo ./build/install-build-deps-android.sh`
* On Mac: Install Oracle's Java JDK, version 1.7 or later.
* On Mac: Install "ant": `brew install ant`.
-## Building
+#### Building
* `./sky/tools/gn --android`
* `ninja -C out/android_Debug`
