Incorrect documentation

[DaveLiddament]

Comment for method Path::makeAbsolute is incorrect.

Path::makeAbsolute("C:/style.css", "/webmozart/puli/css");

actually returns C:/style.css rather than throwing an exception (as documentation says), possibly functionality changed with version 2.5?

[DaveLiddament]

Here is proposed fix: https://github.com/webmozart/path-util/pull/28