Update validate_numeric args (#1392)

src/actions/guides/database/callbacks_and_validations.cr

@@ -152,7 +152,7 @@ class Guides::Database::CallbacksAndValidations < GuideAction
     | validate_uniqueness_of      | ensure a value doesn't exist in the database already   | `validate_uniqueness_of email, query: UserQuery.new.email`       |
     | validate_at_most_one_filled | check that only 1 of the attributes has a value        | `validate_at_most_one_filled choice1, choice2, choice3`          |
     | validate_exactly_one_filled | ensure exactly 1 attribute has a value                 | `validate_exactly_one_filled photo_id, video_id`                 |
-    | validate_numeric            | ensure a number is within the range specified          | `validate_numeric age, greater_than: 20, less_than: 30`          |
+    | validate_numeric            | ensure a number is within the range specified          | `validate_numeric age, at_least: 20, no_more_than: 30`           |
     | validate_format_of          | ensure a string matches a given regex                  | `validate_format_of email, with: /[^@]+@[^.]+..+/`               |
 
     > Note: non-nilable (required) fields automatically use `validate_required`.