Made documentation more clear for Test-VSTeamYamlPipeline (#399)

Author: SebastianSchuetze

.docs/Test-VSTeamYamlPipeline.md

@@ -83,6 +83,8 @@ PipelineId
 
 Currently the API that is used by this cmdlet is only supporting YAML pipelines without template references. This will be supported soon. see the issue in GitHub: [https://github.com/microsoft/azure-pipelines-yaml/issues/34#issuecomment-591092498](https://github.com/microsoft/azure-pipelines-yaml/issues/34#issuecomment-591092498)
 
+This cmdlet is not starting a pipeline run, but rather trying to resolve the full YAML code. It will not check if the task themselves work. See here for more info [https://www.razorspoint.com/2020/03/13/how-to-preview-and-test-a-changing-yaml-pipeline-on-azure-devops/](https://www.razorspoint.com/2020/03/13/how-to-preview-and-test-a-changing-yaml-pipeline-on-azure-devops/)
+
 <!-- #include "./common/prerequisites.md" -->
 
 ## RELATED LINKS

.docs/synopsis/Test-VSTeamYamlPipeline.md

@@ -1 +1 @@
-Tests the commited YAML pipeline files to check for inconsitencies. Now, you can try out a YAML pipeline without committing it to a repo or running it. Given an existing pipeline and an optional new YAML payload, this function will give you back the full YAML pipeline.
+Tests the commited YAML pipeline files to check for inconsitencies like syntax, references etc.. Now, you can try out a YAML pipeline without committing it to a repo or running it. Given an existing pipeline and an optional new YAML payload, this function will give you back the full YAML pipeline.