Fix typo

jedisct1 · jedisct1 · commit f9c244db103a · 2019-10-20T12:03:20.000+02:00
I'm quite surprised that it didn't break Android builds
diff --git a/dnscrypt-proxy/systemd_linux.go b/dnscrypt-proxy/systemd_linux.go
@@ -1,4 +1,4 @@
-// +build !andoid
+// +build !android
 
 package main
 
