message: fix(aio): remove broken span closing tag
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diff: @@ -496,7 +496,7 @@ Remember that impure pipes are called every few milliseconds.
  If you're not careful, this pipe will punish the server with requests.
  In the following code, the pipe only calls the server when the request URL changes and it caches the server response.
  -The code uses the [Angular http](guide/http) client to retrieve data</span>:
  +The code uses the [Angular http](guide/http) client to retrieve data:
  <code-example path="pipes/src/app/fetch-json.pipe.ts" title="src/app/fetch-json.pipe.ts">
  