Update README.md

README.md

-##About This Profile
+## About This Profile
 
 This profile instantiates POWDER's Massive MIMO base station (Skylark Wireless Faros (R) with 64 antennas), and 2 Iris SDR clients connetec to a d430 machine. The profile also fetches the latest RENEWLab software with a wide variety of tools to work with Faros Massive MIMO base station, including MATLAB scripts for over-the-air many-antenna experiments, large-scale channel measurement, and many python tools for test and experimentation. To learn more about RENEWLab, see https://docs.renew-wireless.org
 
-##Getting Started
+## Getting Started
 
 After logging into pc1, RENEWLab software source is available at /local/repository.
 
 To start a large-scale channel measurement:
 
-`cd /local/repository/CC/Sounder<br />
-cmake .<br />
-make -j<br />
-sudo ./sounder files/tddconfig_1cl.json`
+```shell
+cd /local/repository/CC/Sounder
+cmake .
+make -j
+sudo ./sounder files/tddconfig_1cl.json
+```