Fix some formatting issues moaned by linter

Author: sirhcel

README.md

@@ -170,4 +170,5 @@ compile with older versions but that may change in any new patch release.
 
 ### Running Tests
 
-See [`testsuite/README.md`](testsuite/README.md) for how to set up and run tests on the target.
+See [`testsuite/README.md`](testsuite/README.md) for how to set up and run
+tests on the target.

testsuite/README.md

@@ -12,7 +12,6 @@ Board in mind. They expect that several pins are wired together as hinted in
 
 ![test wiring](assets/test-wiring.jpg "Test Wiring for STM32F3Discovery")
 
-
 ## Running Tests
 
 Once you have set up the tooling and wired-up the board, you can execute the