period instead of dash

Co-Authored-By: Azoy <[email protected]>

Author: benrimmington

CHANGELOG.md

@@ -7527,7 +7527,7 @@ Swift 1.0
 [SE-0228]: <https://github.com/apple/swift-evolution/blob/master/proposals/0228-fix-expressiblebystringinterpolation.md>
 [SE-0230]: <https://github.com/apple/swift-evolution/blob/master/proposals/0230-flatten-optional-try.md>
 [SE-0235]: <https://github.com/apple/swift-evolution/blob/master/proposals/0235-add-result.md>
-[SE-0242]: <https://github.com/apple/swift-evolution/blob/master/proposals/0242-default-values-memberwise-md>
+[SE-0242]: <https://github.com/apple/swift-evolution/blob/master/proposals/0242-default-values-memberwise.md>
 [SE-0245]: <https://github.com/apple/swift-evolution/blob/master/proposals/0245-array-uninitialized-initializer.md>
 
 [SR-106]: <https://bugs.swift.org/browse/SR-106>