Fixed typos in README.md
Fixed typos in README.md

android/ndk-samples,ggfan/android-ndk,ggfan/android-ndk,ggfan/android-ndk,ggfan/android-ndk,android/ndk-samples,android/ndk-samples,ggfan/android-ndk,android/ndk-samples,android/ndk-samples