Use the correct method to fetch the extension settings.

Author: dompuiu

src/rules/__tests__/getExtensionSettingsByRuleComponent.test.js

@@ -19,7 +19,7 @@ describe('getExtensionSettingsByRuleComponent', () => {
     return getExtensionSettingsByRuleComponent({
       delegateConfig: {
         extension: {
-          getExtensionSetting: () => Promise.resolve(extensionSettings)
+          getExtensionSettings: () => Promise.resolve(extensionSettings)
         }
       },
       contextData

src/rules/getExtensionSettingsByRuleComponent.js

@@ -12,15 +12,15 @@ governing permissions and limitations under the License.
 module.exports = (context) => {
   let {
     delegateConfig: {
-      extension: { getExtensionSetting }
+      extension: { getExtensionSettings }
     }
   } = context;
 
-  if (!getExtensionSetting) {
-    getExtensionSetting = () => Promise.resolve({});
+  if (!getExtensionSettings) {
+    getExtensionSettings = () => Promise.resolve({});
   }
 
-  return getExtensionSetting(context).then((extensionSettings) => ({
+  return getExtensionSettings(context).then((extensionSettings) => ({
     ...context,
     contextData: {
       ...context.contextData,