Changed element.data to nodeValue since that is the official property.

ignite-template.js

@@ -2511,12 +2511,12 @@ class text extends IgniteTemplate {
             }
         }
 
-        this.element.data = this._text;
+        this.element.nodeValue = this._text;
     }
 
     onTextChanged(newValue) {
         if (this.element) {
-            this.element.data = newValue;
+            this.element.nodeValue = newValue;
         }
 
         this._text = newValue;