Correct Grammar of a declaration

[tadbyt]

Location

https://docs.swift.org/swift-book/documentation/the-swift-programming-language/declarations https://docs.swift.org/swift-book/documentation/the-swift-programming-language/summaryofthegrammar#Declarations

Description

There is a trailing backslash in the final production of declaration, both in the introduction of the Declarations section and in the Declarations subsection of the Summary of the Grammar section.

Correction

Remove the trailing backslash in both place.