fix(ci): invalid ci file

Author: jaredcnance

.gitlab-ci.yml

@@ -9,6 +9,6 @@ build:
  stage: build
  script:
   - dotnet pack ./src/JsonApiDotNetCore -c Release -o ./artifacts
-  - mono /bin/NuGet.exe push ./artifacts/**.nupkg -ApiKey $NUGET_KEY'
+  - mono /bin/NuGet.exe push artifacts/**.nupkg -ApiKey $NUGET_KEY
  only:
    - master