Bug 10776: fix awkward wording in subscription notification screen

Bug 10776: fix awkward wording in subscription notification screen

to test:
- make a subscription available to be notified about
- log into the opac, click the subscriptions tab, then More details
- click "Subscribe to email notification on new issues"
- observe the text without the patch - there seems to be an extra "arrive?"
- apply the patch, refresh - wording should flow a bit better.

Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Fixes bad wording and works as described.
Passes all tests and QA script, template change only.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>