Update AUTHORS.txt

Author: cnderrauber

AUTHORS.txt

@@ -14,6 +14,7 @@ Bragadeesh <bragboy@gmail.com>
 Carson Hoffman <c@rsonhoffman.com>
 Cecylia Bocovich <cohosh@torproject.org>
 Chris Hiszpanski <thinkski@users.noreply.github.com>
+cnderrauber <zengjie9004@gmail.com>
 Daniele Sluijters <daenney@users.noreply.github.com>
 folbrich <frank.olbricht@gmail.com>
 Hayden James <hayden.james@gmail.com>