doc: update list of needed Android packages.

doc/platforms-android.dox

@@ -49,8 +49,9 @@ packages for a cleaner setup.
 @note
     -   [android-sdk](https://aur.archlinux.org/packages/android-sdk/)
     -   [android-ndk](https://aur.archlinux.org/packages/android-ndk/)
-    -   [android-sdk-build-tools-26.0.2](https://aur.archlinux.org/packages/android-sdk-build-tools-26.0.2/)
-    -   [android-platform-25](https://aur.archlinux.org/packages/android-platform-25/)
+    -   [android-sdk-build-tools](https://aur.archlinux.org/packages/android-sdk-build-tools/)
+    -   [android-sdk-platform-tools](https://aur.archlinux.org/packages/android-sdk-platform-tools/)
+    -   [android-platform-22](https://aur.archlinux.org/packages/android-platform-22/)
     -   [android-sdk-cmake](https://aur.archlinux.org/packages/android-sdk-cmake/)
 
 Gradle requires Android SDK version of CMake, which is currently at version