Incorrect documented return type for `Container.top()`

The documentation for Container.top() consistently claims that it returns a string. It does not; instead it returns a parsed JSON object which looks like this:

{
    "Processes": [
        [
            "centos",
            "65436",
            "65386",
            "0",
            "21:38",
            "?",
            "00:00:01",
            "python3 /home/foo/baz.py"
        ],
        [
            "centos",
            "65786",
            "65436",
            "0",
            "21:38",
            "?",
            "00:00:00",
            "/usr/local/bin/python3 /home/foo/bar.py"
        ]
    ],
    "Titles": ["UID", "PID", "PPID", "C", "STIME", "TTY", "TIME", "CMD"]
}

Note: I've only tested this in version 4.2.0, but it appears to remain true in the current version of the code.

Start at the documentation entry for Container.top() and verify its current return value against the JSON object shown in the issue. Update the documented return type so it no longer claims to be a string, then confirm that the generated or source documentation consistently describes the parsed object.