perf: update static style template for lit

The static style template was still configured to look fro lit-element
which is an incorrect config.

Changes to be committed:
modified:   scripts/staticStyles-template.js

scripts/staticStyles-template.js

@@ -1,2 +1,2 @@
-import {css} from 'lit-element';
+import {css} from 'lit';
 export default css`<% content %>`;