fix(docs-infra): add [lang] attribute to index.html of angular.io (#28916)

It's the right thing to do, and improves accessiblity. See: https://dequeuniversity.com/rules/axe/3.1/html-has-lang?application=lighthouse PR Close #28916
2019-02-21 17:23:16 -08:00 · 2019-02-21 17:23:16 -08:00 · 2df2168c0a
parent 8043db570f
commit 2df2168c0a
1 changed files with 1 additions and 1 deletions
--- a/aio/src/index.html
+++ b/aio/src/index.html
@ -1,5 +1,5 @@
 <!doctype html>
-<html>
+<html lang="en">

 <head>
  <meta charset="utf-8">