handle rest-api docs

Author: jakelandis

x-pack/docs/en/rest-api/watcher/ack-watch.asciidoc

@@ -68,8 +68,7 @@ PUT _watcher/watch/my_watch
     "test_index": {
       "throttle_period": "15m",
       "index": {
-        "index": "test",
-        "doc_type": "test2"
+        "index": "test"
       }
     }
   }

x-pack/docs/en/rest-api/watcher/execute-watch.asciidoc

@@ -255,7 +255,7 @@ This is an example of the output:
           "index": {
             "response": {
               "index": "test",
-              "type": "test2",
+              "type": "_doc",
               "version": 1,
               "created": true,
               "result": "created",

x-pack/docs/en/rest-api/watcher/get-watch.asciidoc

@@ -81,8 +81,7 @@ Response:
     "actions": {
       "test_index": {
         "index": {
-          "index": "test",
-          "doc_type": "test2"
+          "index": "test"
         }
       }
     }