Design-Documents.md incorrect link (#153509)
Fixed an incorrect link. I think it was accidentally pasted twice.
diff --git a/docs/contributing/Design-Documents.md b/docs/contributing/Design-Documents.md
index eb2535a..c6596d5 100644
--- a/docs/contributing/Design-Documents.md
+++ b/docs/contributing/Design-Documents.md
@@ -18,7 +18,7 @@
2. [Archive of design documents][] from before the [`design doc`][]
GitHub issue label was introduced.
-[`design doc`]: https://github.com/flutter/flutter/issues/151486
+[`design doc`]: https://github.com/flutter/flutter/issues?q=is%3Aopen+is%3Aissue+label%3A%22design+doc%22
[Archive of design documents]: https://github.com/flutter/flutter/issues/151486
## Purpose of design docs
