message: docs: fix base href haser tag
  I add '>' end of header tag
  Fixes
  PR Close
diff: @@ -41,7 +41,7 @@ The CLI automatically appends `Component`, so if you were to write `first-compon
  <div class="alert is-helpful">
  -<header<code>&lt;base href&gt;</code></header>
  +<header><code>&lt;base href&gt;</code></header>
  This guide works with a CLI-generated Angular application.
  If you are working manually, make sure that you have `<base href="/">` in the `<head>` of your index.html file.
  