Merge pull request rails#54450 from Bilka2/guides-i18n-blank-error

Fix :blank error message in i18n guide to match default [ci skip]

Author: p8

guides/source/i18n.md

@@ -960,7 +960,7 @@ This way you can provide special translations for various error messages at diff
 
 The translated model name, translated attribute name, and value are always available for interpolation as `model`, `attribute` and `value` respectively.
 
-So, for example, instead of the default error message `"cannot be blank"` you could use the attribute name like this : `"Please fill in your %{attribute}"`.
+So, for example, instead of the default error message `"can't be blank"` you could use the attribute name like this : `"Please fill in your %{attribute}"`.
 
 * `count`, where available, can be used for pluralization if present: