saved filters: update autocomplete label

Author: lyubov-voloshko

frontend/src/app/components/dashboard/db-table-view/saved-filters-panel/saved-filters-dialog/saved-filters-dialog.component.html

@@ -23,7 +23,7 @@ <h3 class="section-title">Conditions & Main column</h3>
 
             <!-- Filter Selection -->
             <mat-form-field class="filters-select" appearance="outline">
-                <mat-label>Add condition</mat-label>
+                <mat-label>Click here to add condition</mat-label>
                 <input type="text" matInput name="filter_columns"
                     [matAutocomplete]="auto"
                     [formControl]="fieldSearchControl">