Reverts changes to indentation

Author: lcawl

conf.yaml

@@ -493,7 +493,7 @@ contents:
             prefix:     en/kibana
             current:    6.7
             branches:   [ master, 7.x, { 7.0: 7.0.0-rc1 }, 6.7, 6.6, 6.5, 6.4, 6.3, 6.2, 6.1, 6.0, 5.6, 5.5, 5.4, 5.3, 5.2, 5.1, 5.0, 4.6, 4.5, 4.4, 4.3, 4.2, 4.1, 4.0, 3.0 ]
-            index:       docs/index.x.asciidoc
+            index:      docs/index.x.asciidoc
             chunk:      1
             tags:       Kibana/Reference
             subject:    Kibana