Update the documentation for FielSystemEntity.resolveSymbolicLinks
Update the documentation for FielSystemEntity.resolveSymbolicLinks

The platform difference was the opposite of what was documented.

With the following directory structure

 /tmp/xxx
        a/b
        x -> a/b

resolving x/.. on Windows results in /tmp/xxx and on Linux results in
/tmp/xxx/a. Resolving just x results in /tmp/xxx/a/b on both platforms.

R=whesse@google.com, lrn@google.com
BUG=http://dartbug.com/21967

Review URL: https://codereview.chromium.org//832383002

git-svn-id: c93d8a2297af3b929165606efe145742a534bc71@42725 260f80e4-7a28-3924-810f-c04153c831b5

dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dartino/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-lang/sdk,dart-archive/dart-sdk,dartino/dart-sdk,dart-lang/sdk,dart-lang/sdk,dart-lang/sdk,dartino/dart-sdk,dart-lang/sdk,dartino/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk,dart-archive/dart-sdk