Bug 10000 - Little typo in intranet-tmpl/prog/en/modules/help/tools/letter.tt: sliip

Bug 10000 - Little typo in intranet-tmpl/prog/en/modules/help/tools/letter.tt: sliip

This patch removes the extra i in "sliip."

To test, go to Tools -> Notices & Slips and view the help file. The last
bulleted item on the page should contain no typo.

Signed-off-by: Bernardo Gonzalez Kriegel <bgkriegel@gmail.com>
Comment: Can't resist to sign Bug 10000!!
Work as described. No errors.

Signed-off-by: Galen Charlton <gmc@esilibrary.com>
Signed-off-by: Katrin Fischer <Katrin.Fischer.83@web.de>
Can't resist to QA - All tests and QA script pass.
Signed-off-by: Jared Camins-Esakov <jcamins@cpbibliography.com>