replace outdated authors list with github stats link

Akuli · Akuli · commit 330f10bc11c7 · 2020-07-26T00:01:31.000+03:00
diff --git a/README.md b/README.md
@@ -104,11 +104,8 @@ pull with git and run `make-html.py` again.
 
 ## Authors
 
-I'm Akuli and I have written most of this tutorial, but these people
-have helped me with it:
-- [SpiritualForest](https://github.com/SpiritualForest): Lots of typing
-    error fixes.
-- [theelous3](https://github.com/theelous3): Small improvements and fixes.
+I'm Akuli and I have written most of this tutorial, but other people have helped me with it.
+See [github's contributors page](https://github.com/Akuli/python-tutorial/graphs/contributors) for details.
 
 ***
 
