Merge pull request #4699 from nikolas/patch-4

docs: grammar fix

docs/api-guide/validators.md

@@ -159,7 +159,7 @@ If you want the date field to be entirely hidden from the user, then use `Hidden
 
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-**Note**: The `UniqueFor<Range>Validation` classes always imposes an implicit constraint that the fields they are applied to are always treated as required. Fields with `default` values are an exception to this as they always supply a value even when omitted from user input.
+**Note**: The `UniqueFor<Range>Validation` classes impose an implicit constraint that the fields they are applied to are always treated as required. Fields with `default` values are an exception to this as they always supply a value even when omitted from user input.
 
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