fix: fix internal selector used to reset schema form

Author: sghoweri

docs-site/src/components/schema-form/component-explorer.js

@@ -118,7 +118,7 @@ export default class ComponentExplorer extends withContext(withLitHtml()) {
 
   rendered(){
     super.rendered && super.rendered();
-    this.schemaForm = this.querySelector('schema-form');
+    this.schemaForm = this.querySelector('bolt-schema-form');
   }
 
   render() {

docs-site/src/components/schema-form/component-explorer.scss

@@ -41,6 +41,7 @@ $bolt-input-transition: $bolt-transition;
 
 
 bolt-component-explorer {
+  @include bolt-margin-bottom(medium);
   display: block;
 }