Removes reference to GitHub download section as they have been deprec…
…ated and points to SourceForge instead.
|@@ -18,7 +18,7 @@ Building|
|Pre-built font binaries|
|-The font binaries are not part of the source files. They are provided in the [Downloads](https://github.com/adobe/Source-Code-Pro/downloads) section.|
|+The font binaries are not part of the source files. They are available on [SourceForge](https://sourceforge.net/projects/sourcecodepro.adobe/files/) section.|