Update and rename memoq.md to memoq-tutorial.md

[bittlingmayer]

See https://github.com/machinetranslate/machinetranslate.org/issues/560

Description

Fixes #560

Type of PR

• Creates the article [article name]
• Edits How to get machine translation in memoQ and How to get machine translation in Trados

Checklist:

• [x] I have read the contributing guidelines.
• [x] I have followed the style guide.