Minor formatting fixes

- add a missing paragraph break
- remove redundant <hr> element

docs/Platform-Android.md

@@ -136,15 +136,13 @@ The repository contains a simple example application, showing usage of the libra
 1. Build and run an example application
 
 If everything works fine, then you can test your passwords in the simulator (or on a real device):
-![Android Example App](./images/android-tester.png)
-
 
----
+![Android Example App](./images/android-tester.png)
 
 ## Contact
 
 If you need any assistance, do not hesitate to drop us a line at [hello@wultra.com](mailto:hello@wultra.com) or our official [gitter.im/wultra](https://gitter.im/wultra) channel.
 
 ### Security Disclosure
 
-If you believe you have identified a security vulnerability with Wultra Passphrase Meter, you should report it as soon as possible via email to [support@wultra.com](mailto:support@wultra.com). Please do not post it to a public issue tracker.
+If you believe you have identified a security vulnerability with Wultra Passphrase Meter, you should report it as soon as possible via email to [support@wultra.com](mailto:support@wultra.com). Please do not post it to a public issue tracker.