Update 2020-07-17-Sioux.NET-on-Track.md

add alt to img

Author: dlech

projects/_posts/2020-07-17-Sioux.NET-on-Track.md

@@ -20,7 +20,7 @@ excerpt: "Daisy Chain functionality written for the EV3DEV/C++ environment. This
 ## About Sioux.NET on Track
 
 <a href="https://siouxnetontrack.wordpress.com/">
-<img src="/images/projects/2020-07-17-net-on-track-logo.jpg" class="img-responsive pull-right" width="160">
+<img src="/images/projects/2020-07-17-net-on-track-logo.jpg" class="img-responsive pull-right" width="160" alt="Sioux.NET Logo">
 </a>
 
 Sioux .NET on Track is one of the expertisegroups of Sioux Technologies in Eindhoven (The Netherlands).