Change data-id to data-shepherd-step-id on Step content elements.

clashResiliance++;

Author: BrianSipple

src/js/step.js

@@ -190,7 +190,7 @@ export class Step extends Evented {
   _createTooltipContent() {
     const content = document.createElement('div');
     const classes = this.options.classes || '';
-    const element = createFromHTML(`<div class='${classes}' data-id='${this.id}' id="step-${this.options.id}-${uniqueId()}"}>`);
+    const element = createFromHTML(`<div class='${classes}' data-shepherd-step-id='${this.id}' id="step-${this.options.id}-${uniqueId()}"}>`);
     const header = document.createElement('header');
 
     if (this.options.title) {

test/unit/test.step.js

@@ -100,7 +100,7 @@ describe('Tour | Step', () => {
       it('shows step evoking method, regardless of order', () => {
         showTestStep.show();
 
-        assert.equal(document.querySelector('[data-id=test2]').dataset.id, 'test2');
+        assert.exists(document.querySelector('[data-shepherd-step-id=test2]'));
       });
     });
   });