Update Vector docs

[mdumandag]

• Make sure that we provide SDK examples along with the curl ones.
• Add docs for the new update rest endpoint
• Add docs for the new reset?all endpoint
• Make the text, code snippets, and responses consisten in the rest api docs
• Do not provide node(fetch), and python(requests) snippets in the rest api examples. curl is enough, as it is trivial to convert curl to those. The main reason to do that was I wanted to have code snippets for both default namespace and a separate namespace, and providing 6 tabs on that part of the screen was too much.