small cleanup

changedetectionio/processors/restock_diff/forms.py

@@ -47,11 +47,11 @@ class processor_settings_form(processor_text_json_diff_form):
                     <span class="pure-form-message-inline">When OFF - Only care about restock detection</span>                    
                 </fieldset>
                 <fieldset class="pure-group price-change-minmax">               
-                    {{ render_field(form.price_change_min, placeholder=watch['restock']['price']) }}
+                    {{ render_field(form.price_change_min, placeholder=watch['restock'].get('price')) }}
                     <span class="pure-form-message-inline">Minimum amount, only trigger a change when the price is less than this amount.</span>
                 </fieldset>
                 <fieldset class="pure-group price-change-minmax">
-                    {{ render_field(form.price_change_max, placeholder=watch['restock']['price']) }}
+                    {{ render_field(form.price_change_max, placeholder=watch['restock'].get('price')) }}
                     <span class="pure-form-message-inline">Maximum amount, only trigger a change when the price is more than this amount.</span>
                 </fieldset>
                 <fieldset class="pure-group price-change-minmax">
@@ -60,4 +60,5 @@ class processor_settings_form(processor_text_json_diff_form):
                     <span class="pure-form-message-inline">For example, If the product is $1,000 USD originally, <strong>2%</strong> would mean it has to change more than $20 since the first check.</span><br>
                 </fieldset>                
             </div>
-        </fieldset>"""
+        </fieldset>
+        """