For some unknown reasons, we are displaying "1.17.0" as the API version
in the release-1.16 branch. The error was introduced in #16569.
This PR refreshes the reference doc by showing the correct version. The
updated reference also contains the following improvements:
- responses from an API are now sorted by their code;
- the left navigation bar can be horizontally scrolled if text is too long;
- the fixes to the examples are backported to release-1.16.
Qiming Teng
e01fd4d196