Add patterns to UX guideline

Bug: None
Change-Id: I7a9dc66990aee65ed5a24677b75ebdd29dbf4e52
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/6171573
Commit-Queue: Kim-Anh Tran <[email protected]>
Auto-Submit: Changhao Han <[email protected]>
Reviewed-by: Kim-Anh Tran <[email protected]>
diff --git a/docs/styleguide/ux/README.md b/docs/styleguide/ux/README.md
index cdaa7cf..d4a62c1 100644
--- a/docs/styleguide/ux/README.md
+++ b/docs/styleguide/ux/README.md
@@ -9,6 +9,7 @@
 
 1. [How to organize UI](organizing.md)
 1. [How to style UI](styleguide.md)
+1. [How to (re)use common UX patterns](patterns.md)
 1. [How to write UI text](writing.md)
 1. [How to format numbers](numbers.md)
 1. [Glossary](glossary.md)