Add more FAQ items

[rsese]

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Description of the Change

Adding 4 more FAQ items - looked mainly at some Discuss numbers in addition to scanning through the last 3 months of Atom Slack discussion in the main #atom channel. What ended up being most useful was seeing the most searched terms in the last year or so in addition to the top referred topics.

Adding:

• How do I turn on line wrap?
  • x-ref: https://discuss.atom.io/t/turn-on-line-wrap/1627/47
• The menu bar disappeared, how do I get it back?
  • x-ref: https://discuss.atom.io/t/hide-toggle-menubar/8870/27
• How do I use a newline in the result of find and replace?
  • x-ref: https://discuss.atom.io/t/find-and-replace-with-newline/9009
• What is this line on the right in the editor view?
  • x-ref: https://discuss.atom.io/t/what-is-this-line-on-the-right-in-the-editor-view/18477

Release Notes

N/A