Add new step text (fixes #3049) (#3052)

Author: singharpita

src/app/courses/add-courses/courses-step.component.html

@@ -32,6 +32,6 @@
   <div planetStepListActions>
     <a mat-raised-button color="primary" (click)="addExam()">{{activeStep?.exam ? 'Update' : 'Add' }} Exam</a>
     <button mat-raised-button color="primary" (click)="attachItem('resources')" [planetSubmit]="spinnerOn">Add Resource</button>
-    <button mat-raised-button color="accent" (click)="addStep()" i18n>Add New Step</button>
+    <button mat-raised-button color="accent" (click)="addStep()" i18n>Add Step</button>
   </div>
 </planet-step-list>