Fix typo in servant-docs changelog

Author: phadej

servant-docs/CHANGELOG.md

@@ -1,7 +1,7 @@
 [The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-docs/CHANGELOG.md)
 [Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
 
-0.14.2
+0.11.5
 ----