Update bottom margin for post snippets
Update bottom margin for post snippets

alexjlockwood/AndroidDesignPatterns,alexjlockwood/AndroidDesignPatterns,alexjlockwood/alexjlockwood.github.io,alexjlockwood/alexjlockwood.github.io,alexjlockwood/alexjlockwood.github.io,alexjlockwood/AndroidDesignPatterns