Merge pull request #600 from pavel-demin/develop

update link in vna/app/index.html

projects/vna/app/index.html

@@ -23,7 +23,7 @@ <h1>Vector Network Analyzer</h1>
 <p>More details about this application can be found at <a href="http://pavel-demin.github.io/red-pitaya-notes/vna/" target="_blank">this link</a>.</p>
 <h2>Getting started with MS Windows</h2>
 <ul>
-<li>Download and unpack the <a href="https://www.dropbox.com/sh/5fy49wae6xwxa8a/AACxA0DwC627fdsD9NH8mJPta/vna/vna-win32-20170819.zip?dl=1">control program</a>.</li>
+<li>Download and unpack the <a href="https://github.com/pavel-demin/red-pitaya-notes/releases/download/20171010/vna-win32-20171010.zip">control program</a>.</li>
 <li>Run the <code>vna.exe</code> program.</li>
 <li>Type in the IP address of the Red Pitaya board and press Connect button.</li>
 <li>Perform calibration and measurements.</li>