Update Polymer components.

third_party/polymer/components/paper-item/.github/ISSUE_TEMPLATE.md

Index: third_party/polymer/components/paper-item/.github/ISSUE_TEMPLATE.md
diff --git a/third_party/polymer/components/app-route/.github/ISSUE_TEMPLATE.md b/third_party/polymer/components/paper-item/.github/ISSUE_TEMPLATE.md
similarity index 77%
copy from third_party/polymer/components/app-route/.github/ISSUE_TEMPLATE.md
copy to third_party/polymer/components/paper-item/.github/ISSUE_TEMPLATE.md
index f102f57634e09427e929bc6bdc357486431be7cd..c38fb3e543aeca163ba8e734e1629ad16a7acf8a 100644
--- a/third_party/polymer/components/app-route/.github/ISSUE_TEMPLATE.md
+++ b/third_party/polymer/components/paper-item/.github/ISSUE_TEMPLATE.md
@@ -1,4 +1,4 @@
-<!-- Instructions: https://github.com/PolymerElements/app-route/CONTRIBUTING.md#filing-issues -->
+<!-- Instructions: https://github.com/PolymerElements/paper-item/CONTRIBUTING.md#filing-issues -->
 ### Description
 <!-- Example: The `paper-foo` element causes the page to turn pink when clicked. -->
 
@@ -11,7 +11,7 @@
 <!-- Example: The page turns pink. -->
 
 ### Live Demo
-<!-- Example: https://jsbin.com/hirore/edit?html,output -->
+<!-- Example: https://jsbin.com/cagaye/edit?html,output -->
 
 ### Steps to reproduce