fixed titles of var files (#138)

Author: itaysk

docs/content/pipelines/Run Pipeline.md

@@ -13,15 +13,15 @@ It is possible to pass build variables using a file. (supported format: json and
 The variables file structure should be an array. <br>
 The pipeline will be triggered multiple times according to the array length.
 
-#### Variable json file with 2 sets of variables
+#### Variable yaml file with 2 sets of variables
 ```yaml
 - key: value
   key2: key1
 - key: value
   key2: key2
 ```
 
-#### Variable yaml file with 2 sets of variables
+#### Variable json file with 2 sets of variables
 ```json
 [
   {