Update README.md

[ROCm/rocm_smi_lib commit: 716a8a0661]

projects/rocm-smi-lib/README.md

@@ -1,10 +1,14 @@
 # rocm_smi_lib
 
-## To build library and example:
+### To build library and example:
 mkdir -p build
+
 cd build
+
 cmake ..
+
 make
+
 cd ..
 
 The above commands will result in building the library librocm_smi.so and