fix-#825

docs/mastering-plone-5/dexterity_reference.md

@@ -701,7 +701,7 @@ class IMyEvent(model.Schema):
             required=False)
 
     @invariant
-    def validate_start_end(data): 
+    def validate_start_end(data):
         if data.start is not None and data.end is not None:
             if data.start > data.end:
                 raise Invalid(_('Start must be before the end.'))
@@ -711,7 +711,7 @@ class IMyEvent(model.Schema):
 To learn more about directives, validators and default values, refer to the following:
 
 - [Form schema hints and directives](https://5.docs.plone.org/external/plone.app.dexterity/docs/reference/form-schema-hints.html)
-- [Validation](https://5.docs.plone.org/develop/addons/schema-driven-forms/customizing-form-behaviour/validation.html) (this documentation unfortunately still uses the obsolete grok technology)
+- [Validation](https://5.docs.plone.org/develop/addons/schema-driven-forms/customising-form-behaviour/validation.html) (this documentation unfortunately still uses the obsolete grok technology)
 - [z3c.form documentation](https://z3cform.readthedocs.io/en/latest/advanced/validator.html)
 - [Default values for fields on add forms](https://5.docs.plone.org/external/plone.app.dexterity/docs/advanced/defaults.html)
 ```

docs/mastering-plone/features.md

@@ -554,7 +554,7 @@ You can even make a page, with or without sub pages, editable only by a group of
 Plone has an integrated mechanism to remember urls that where modified.
 A moved page is still available via the former url.
 
-Additional to this behaviour, a page can be explicitly made available under further urls.
+Additional to this behavior, a page can be explicitly made available under further urls.
 
 You can find the UI for adding alternative urls following the context menu {guilabel}`...`.