rename manually-triggered pipeline

we had two instances of the same pipeline, each spewing hundreds of
thousands of builds. this renames the auto-set one to the name used in
the docs. this will also archive the old one.

Signed-off-by: Aidan Oldershaw <aoldershaw@pivotal.io>

pipelines/set-pipelines.yml

@@ -39,7 +39,7 @@ jobs:
         file: concourse-examples/pipelines/time-triggered.yml
       - set_pipeline: git-triggered
         file: concourse-examples/pipelines/git-triggered.yml
-      - set_pipeline: manually-triggered
+      - set_pipeline: manual-trigger
         file: concourse-examples/pipelines/manually-triggered.yml
       - set_pipeline: hooks
         file: concourse-examples/pipelines/job-and-task-hooks.yml