Protected edit request
Messages in the "Mediawiki:" namespace are not editable except by admins. You have to locate the messages in the translatable space, where they can be vetted and will later be imported into the "Mediawiki:" namespace by authorized bots. Also you use a final dot in the sentence, instead of the danda standard...
In the past I have put requests in the support page for such translations, and admins have entered it for me. For example: here. Nevertheless, please let me know where I can save the message for vetting.
Regarding the final dot, you must be aware that unlike Hindi, in languages like Marathi and Konkani, it is usual to use a dot for the end of a sentence and not a danda. Take a look at some articles in these languages, and you will see that the danda is not used, e.g.: