fzf: update page and add Dutch translation

[dmmqz]

• The page(s) are in the correct platform directories: common, linux, osx, windows, sunos, android, etc.
• The page(s) have at most 8 examples.
• The page description(s) have links to documentation or a homepage.
• The page(s) follow the content guidelines.
• The page(s) follow the style guide.
• The PR title conforms to the recommended templates.
• Version of the command being documented (if known): 0.65.1 (e5cd7f0a)

The last example doesn't work for me without the \, but I'm not sure if this is the case on all systems.