Updated Compile from source in Linux (markdown)

Compile-from-source-in-Linux.md

@@ -171,7 +171,8 @@ make -j $(nproc) install
 
 <h3>SDRplay (Using SDRplay's V3 API)</h3>
 Either download the API from: [SDRplay](https://www.sdrplay.com/downloads/) or run:
-<pre><code>git clone https://github.com/srcejon/sdrplayapi.git
+<pre>cd /opt/build
+<code>git clone https://github.com/srcejon/sdrplayapi.git
 cd sdrplayapi
 sudo ./install_lib.sh
 </code></pre>