Add English message for "string" validation rule
Add English message for "string" validation rule

This replaces "Validation.string" message with a more meaningful one.

Signed-off-by: Rafał Miłecki <68396d1faf4100deae824f26e1be60d81c1ce164@milecki.pl>

bcit-ci/CodeIgniter4,lonnieezell/CodeIgniter4,bcit-ci/CodeIgniter4,lonnieezell/CodeIgniter4,gustavojm/CodeIgniter4,ytetsuro/CodeIgniter4,gustavojm/CodeIgniter4,samsonasik/CodeIgniter4,samsonasik/CodeIgniter4,kenjis/CodeIgniter4,natanfelles/CodeIgniter4,lonnieezell/CodeIgniter4,natanfelles/CodeIgniter4,ytetsuro/CodeIgniter4,lonnieezell/CodeIgniter4,kenjis/CodeIgniter4,natanfelles/CodeIgniter4,bcit-ci/CodeIgniter4,ytetsuro/CodeIgniter4,samsonasik/CodeIgniter4,bcit-ci/CodeIgniter4,lonnieezell/CodeIgniter4,ytetsuro/CodeIgniter4,gustavojm/CodeIgniter4,ytetsuro/CodeIgniter4,natanfelles/CodeIgniter4,kenjis/CodeIgniter4,natanfelles/CodeIgniter4,samsonasik/CodeIgniter4,samsonasik/CodeIgniter4,kenjis/CodeIgniter4,bcit-ci/CodeIgniter4,gustavojm/CodeIgniter4,natanfelles/CodeIgniter4,samsonasik/CodeIgniter4,ytetsuro/CodeIgniter4,lonnieezell/CodeIgniter4,kenjis/CodeIgniter4