Updating niosv_g helloworld README.md

Author: nithinkumark94

niosv_g/niosv_g_helloworld/sources/README.md

@@ -39,8 +39,9 @@ b. Using build_sof.py to compile the design
 - Invoke the quartus_py shell in the terminal
 
 - Run the following command in the terminal from top level project directory:
+```
 quartus_py ./scripts/build_sof.py
-
+```
 - The quartus tool will compile the design and generate the output files
 
 c. Creating the bsp, build software sources and download elf
@@ -88,4 +89,4 @@ vsim &
 source msim_setup.tcl
 ld_debug
 run -all
-```
+```