Added backticks in comments.
Added backticks in comments.

Adding backticks to the literal value `false` seemed coherent with other literal values (like array literals `[1, 2, 3]`).

The change from `Bool` to `Boolean` was made, as the "general [...] expression" is defined as follows: `@autoclosure expression: () throws -> Boolean`. Therefore `Boolean` seems more accurate.
yoonapps/swift-corelibs-xctest,apple/swift-corelibs-xctest,apple/swift-corelibs-xctest,tiagomartinho/swift-corelibs-xctest,tiagomartinho/swift-corelibs-xctest,yoonapps/swift-corelibs-xctest