Fix reference to wordpress (#4803)

Signed-off-by: Marc Khouzam <marc.khouzam@ville.montreal.qc.ca>

docs/chart_tests.md

@@ -22,10 +22,10 @@ In Helm, there are two test hooks: `test-success` and `test-failure`
 
 ## Example Test
 
-Here is an example of a helm test pod definition in an example mariadb chart:
+Here is an example of a helm test pod definition in an example wordpress chart. The test verifies the access and login to the mariadb database:
 
 ```
-mariadb/
+wordpress/
   Chart.yaml
   README.md
   values.yaml
@@ -64,7 +64,7 @@ spec:
 ```
 
 ## Steps to Run a Test Suite on a Release
-1. `$ helm install mariadb`
+1. `$ helm install wordpress`
 ```
 NAME:   quirky-walrus
 LAST DEPLOYED: Mon Feb 13 13:50:43 2017