Fix valid stage

.gitlab-industrial-ci-kinetic-no-rosinstall.yml

@@ -138,7 +138,7 @@ file_syntax:
 ## so this is a custom-made "dirty" script
 ##########################################################
 adoc_syntax:
-  stage: check
+  stage: postcheck
   image: alpine
   before_script:
     - apk add --update asciidoctor bash

.gitlab-industrial-ci-kinetic-with-rosinstall.yml

@@ -140,7 +140,7 @@ file_syntax:
 ## so this is a custom-made "dirty" script
 ##########################################################
 adoc_syntax:
-  stage: check
+  stage: postcheck
   image: alpine
   before_script:
     - apk add --update asciidoctor bash