Merge pull request dotnet/core-setup#3338 from eerhardt/MergeDevRelease20
authorEric Erhardt <eric.erhardt@microsoft.com>
Tue, 24 Oct 2017 12:54:13 +0000 (07:54 -0500)
committerGitHub <noreply@github.com>
Tue, 24 Oct 2017 12:54:13 +0000 (07:54 -0500)
Add missing slash to build definition.

Commit migrated from https://github.com/dotnet/core-setup/commit/d588ce3b5dfb9b4d919fda398d78abdd7a705150


Trivial merge