update yaml format

DOCS.md

@@ -13,7 +13,8 @@ This plugin can scan your code quality and post the analysis report to your Sona
 The below pipeline configuration demonstrates simple usage:
 
 ```yaml
-  code-analysis:
+steps
+- name: code-analysis
   image: aosapps/drone-sonar-plugin
   settings:
       sonar_host:
@@ -25,7 +26,8 @@ The below pipeline configuration demonstrates simple usage:
 Customized parameters could be specified:
 
 ```diff
-  code-analysis:
+  steps
+  - name: code-analysis
     image: aosapps/drone-sonar-plugin
     settings:
         sonar_host:

README.md

@@ -23,7 +23,8 @@ docker run --rm \
 
 ### Pipeline example
 ```yaml
-  code-analysis:
+steps
+- name: code-analysis
   image: aosapps/drone-sonar-plugin
   settings:
       sonar_host:
@@ -31,4 +32,3 @@ docker run --rm \
       sonar_token:
         from_secret: sonar_token
 ```
-