Autocorrect on unneeded_parentheses_in_closure_argument rule does not insert whitespace

[p-x9]

New Issue Checklist

• Updated SwiftLint to the latest version
• I searched for existing GitHub issues

Describe the bug

If a tuple is used in the argument of a closure, and there is no space between the tuple and "in", the code will be wrong when autocorrected.(See the 'Sample.swift' code below.)

Complete output when running SwiftLint, including the stack trace and command used

$ swiftlint lint --path Sample.swift --no-cache --enable-all-rules --fix
Correcting Swift files at paths Sample.swift
Correcting 'Sample.swift' (1/1)
/Users/p-x9/Desktop/Sample.swift:2:21 Corrected Unneeded Parentheses in Closure Argument
Done inspecting 1 file for auto-correction!

Environment

• SwiftLint version : 0.43.1
• Installation method used :Homebrew
• Paste your configuration file: none
• Are you using nested configurations: No
• Which Xcode version are you using (check xcodebuild -version): Xcode 12.5,Build version 12E262
• Do you have a sample that shows the issue? Run echo "[string here]" | swiftlint lint --no-cache --use-stdin --enable-all-rules
  to quickly test if your example is really demonstrating the issue. If your example is more
  complex, you can use swiftlint lint --path [file here] --no-cache --enable-all-rules.

Sample.swift

let dictionary = [String: Int]()
dictionary.forEach {(key, value)in
    print(key, value)
}

Sample.swift(autocorrected)

let dictionary = [String: Int]()
dictionary.forEach {key, valuein
    print(key, value)
}

[marcelofabri]

@p-x9 This shouldn't be too hard to fix, do you want to give it a shot?

[p-x9]

@marcelofabri please confirm the pullrequest.