[UNOMI-564] - Misinformation in some descriptions in online site docs

[woonsan]

Some descriptions are not precise in online site docs. Should be self-explanatory in the changes.

---

• Make sure there is a JIRA issue filed
  for the change (usually before you start working on it). Trivial changes like typos do not
  require a JIRA issue. Your pull request should address just this issue, without pulling in other changes.
• Format the pull request title like [UNOMI-XXX] - Title of the pull request
• [n/a] Provide integration tests for your changes, especially if you are changing the behavior of existing code or adding
  significant new parts of code.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
  Copy the description to the related JIRA issue
• Run mvn clean install -P integration-tests to make sure basic checks pass. A more thorough check will be
  performed on your pull request automatically.

Trivial changes like typos do not require a JIRA issue (javadoc, project build changes, small doc changes, comments...).
...oh well, already created one, sorry...

• I hereby declare this contribution to be licenced under the Apache License Version 2.0, January 2004

[sergehuber]

Hello Woosan,

Thanks a lot for the PR. It looks all good to me I'll merge them.

Regards,
Serge...