authors: Update carstenhag (Moter8) (fixes #5919)

AUTHORS

@@ -46,7 +46,7 @@ Brandon Philips (philips) <[email protected]>
 Brendan Long (brendanlong) <[email protected]>
 Brian R. Becker (brbecker) <[email protected]>
 Caleb Callaway (cqcallaw) <[email protected]>
-Carsten Hagemann (Moter8) <[email protected]>
+Carsten Hagemann (carstenhag) <[email protected]> <[email protected]>
 Cathryne Linenweaver (Cathryne) <[email protected]> <[email protected]> <[email protected]>
 Cedric Staniewski (xduugu) <[email protected]>
 Chris Howie (cdhowie) <[email protected]>