Properly format list in README

Author: lukaszstolarczuk

README.md

@@ -138,7 +138,8 @@ A memory provider that provides memory from L0 device.
 1) Linux or Windows OS
 2) The `UMF_BUILD_LEVEL_ZERO_PROVIDER` option turned `ON` (by default)
 
-Additionally, required for tests: 
+Additionally, required for tests:
+
 3) Linux OS
 4) The `UMF_BUILD_GPU_TESTS` option turned `ON`
 5) System with Level Zero compatible GPU