fix: demo lint

Author: hutchgrant

demo/src/button.js

@@ -7,8 +7,9 @@ class ButtonComponent extends LitElement {
       label: String
     };
   }
+
   render() {
-    return html `<button>${this.label}</button>`;
+    return html`<button>${this.label}</button>`;
   }
 }
 

demo/src/goodbye-world.js

@@ -7,8 +7,9 @@ class GoodbyeWorld extends LitElement {
       label: String
     };
   }
+
   render() {
-    return html `<div>Goodbye ${this.label}</div>`;
+    return html`<div>Goodbye ${this.label}</div>`;
   }
 }
 

demo/src/hello-world.js

@@ -7,8 +7,9 @@ class HelloWorld extends LitElement {
       label: String
     };
   }
+
   render() {
-    return html `
+    return html`
     <div>Hello ${this.label}</div>`;
   }
 }