Fix formatting of README.md

Author: finagolfin

README.md

@@ -1,32 +1,35 @@
 # Swift cross-compilation SDKs for Android
 
-To build with an SDK, first download [the latest Android NDK 21d]
-(https://developer.android.com/ndk/downloads) and [Swift compiler](https://swift.org/download/#releases).
-Unpack these archives and the SDK.
+To build with an SDK, first download [the latest Android NDK 21d](https://developer.android.com/ndk/downloads)
+and [Swift compiler](https://swift.org/download/#releases). Unpack these archives
+and the SDK.
 
 The SDK will need to be modified with the path to your NDK and Swift compiler
 in the following ways:
 
-1. Change all paths in swift-android-aarch64-24-sdk/usr/lib/swift/android/aarch64/glibc.modulemap
-from /home/butta/swift/android-ndk-r21d to the path to your NDK.
+1. Change all paths in `swift-android-aarch64-24-sdk/usr/lib/swift/android/aarch64/glibc.modulemap`
+from `/home/butta/swift/android-ndk-r21d` to the path to your NDK.
 
-2. Change the symbolic link at swift-android-aarch64-24-sdk/usr/lib/swift/clang
+2. Change the symbolic link at `swift-android-aarch64-24-sdk/usr/lib/swift/clang`
 to point to the clang headers next to your swift compiler, ie
 
-ln -sf /home/yourname/swift-5.3.1-RELEASE-ubuntu20.04/usr/lib/clang/10.0.0 swift-android-aarch64-24-sdk/usr/lib/swift/clang
-
+```
+ln -sf /home/yourname/swift-5.3.1-RELEASE-ubuntu20.04/usr/lib/clang/10.0.0
+swift-android-aarch64-24-sdk/usr/lib/swift/clang
+```
 Finally, modify the cross-compilation JSON file in this repo similarly:
 
-1. All paths to the NDK should change from /home/butta/swift/android-ndk-r21d
+1. All paths to the NDK should change from `/home/butta/swift/android-ndk-r21d`
 to the path to your NDK.
 
-2. The path to the compiler should change from /home/butta/swift/swift-5.3.1-RELEASE-ubuntu20.04
+2. The path to the compiler should change from `/home/butta/swift/swift-5.3.1-RELEASE-ubuntu20.04`
 to the path to your Swift compiler.
 
-3. The path to the Android SDK should change from /home/butta/swift/swift-android-aarch64-24-sdk
+3. The path to the Android SDK should change from `/home/butta/swift/swift-android-aarch64-24-sdk`
 to the path to where you unpacked the Android SDK.
 
 Now you're ready to cross-compile a Swift package with the cross-compilation
 JSON config:
-
+```
 swift build --build-tests --enable-test-discovery --destination ~/swift-android-sdk/android-aarch64.json
+```