git-gui: Corrected a typo in the Swedish translation of 'Continue'

Reported-by: NChristoffer Pettersson <corgrath@gmail.com>
Signed-off-by: NPat Thoyts <patthoyts@users.sourceforge.net>

po/sv.po

@@ -1714,7 +1714,7 @@ msgstr ""
 
 #: lib/index.tcl:30
 msgid "Continue"
-msgstr "Forstätt"
+msgstr "Fortsätt"
 
 #: lib/index.tcl:33
 msgid "Unlock Index"