fixed jenkinsfile syntax w/ burnettk

Jenkinsfile

@@ -85,16 +85,18 @@ pipeline {
     }
   } // stages
   post {
-    always  { script {
-      sh 'docker image prune -f' }
+    always  {
+      script {
+        sh 'docker image prune -f'
         if (params.DISCORD_WEBHOOK_CRED) {
           def result  = currentBuild.result.toLowerCase() ?: 'unknown'
           discordNotify(
             header: "SpiffWorkflow Docker image build ${result}!",
             cred: params.DISCORD_WEBHOOK_CRED,
           )
-      }
-    } }
+        } // if
+      } // script
+    } // always
     cleanup { cleanWs() }
   } // post
 } // pipeline