Short Answer: No
Long Answer
Line links are achieved by anchor links. After parsing the HTML document, you browser has the knowledge of these anchors and can position the top line of your view frame to requested anchor.
http://github.com/.../initializer.rb#L40
In this example, anchor is named L40
.
On the other hand, raw files are text files and GitHub sends them as is with Content-type: text/html; charset=utf-8
header. Response content is displayed as is and there is no possibility to direct browser to a predefined offset.