Bug 11938: fix capitalization: Serial prediction pattern preview - Publication Date

Bug 11938: fix capitalization: Serial prediction pattern preview - Publication Date

During add or edit of a subscription when you test the
prediction pattern, "Publication Date" in the displayed table
has incorrect capitalization. This patch corrects.

To test, apply the patch and create or edit a subscription. In
step two click the "test prediction pattern" button to display
the table.  "Publication date" should be correctly capitalized.

Signed-off-by: Mark Tompsett <mtompset@hotmail.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
String change, all good.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
(cherry picked from commit 3a4607b5fc90ba982d43e8c2ce032ad7157bd0db)
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>