content: fix wording for indonesian translation link
content: fix wording for indonesian translation link

Fixes golang/tour#406

Change-Id: I4c7a1fab1bcacb7b8ded1a2d3a8b8754d2c9993c
Reviewed-on: https://go-review.googlesource.com/93236
Reviewed-by: Brad Fitzpatrick <ae9783c0b0efc69cd85ab025ddd17aa44cdc4aa5@golang.org>

shuLhan/go-tour-id,shuLhan/tour,zorion/go-tour-ca,golang/tour,Go-zh/tour,Go-zh/tour,Go-zh/tour,dupoxy/go-tour-fr,zorion/go-tour-ca,shuLhan/go-tour-id,shuLhan/go-tour-id,dupoxy/go-tour-fr,shuLhan/tour,dupoxy/go-tour-fr,Go-zh/tour,shuLhan/tour