tdf#120513 Change error message for Excel files about recalculate

Change-Id: If69941920060bb34894ea399aa7f15052502b078
Reviewed-on: https://gerrit.libreoffice.org/65288
Tested-by: Jenkins
Reviewed-by: Sophie Gautier <gautier.sophie@gmail.com>
Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>

sc/inc/globstr.hrc

@@ -475,7 +475,7 @@
 #define STR_ERR_CONDFORMAT_PROTECTED            NC_("STR_ERR_CONDFORMAT_PROTECTED", "Conditional Formats can not be created, deleted or changed in protected sheets.")
 #define STR_EDIT_EXISTING_COND_FORMATS          NC_("STR_EDIT_EXISTING_COND_FORMATS", "The selected cell already contains conditional formatting. You can either edit the existing conditional format or you define a new overlapping conditional format.\n\n Do you want to edit the existing conditional format?")
 #define STR_QUERY_FORMULA_RECALC_ONLOAD_ODS     NC_("STR_QUERY_FORMULA_RECALC_ONLOAD_ODS", "This document was last saved by an application other than %PRODUCTNAME.  Some formula cells may produce different results when recalculated.\n\nDo you want to recalculate all formula cells in this document now?")
-#define STR_QUERY_FORMULA_RECALC_ONLOAD_XLS     NC_("STR_QUERY_FORMULA_RECALC_ONLOAD_XLS", "This document was last saved by Excel.  Some formula cells may produce different results when recalculated.\n\nDo you want to recalculate all formula cells now?")
+#define STR_QUERY_FORMULA_RECALC_ONLOAD_XLS     NC_("STR_QUERY_FORMULA_RECALC_ONLOAD_XLS", "This document was saved in Excel file format (.xlsx). Some formula cells may produce different results when recalculated. \n\nDo you want to recalculate all formula cells now?")
 #define STR_NO_INSERT_DELETE_OVER_PIVOT_TABLE   NC_("STR_NO_INSERT_DELETE_OVER_PIVOT_TABLE", "You cannot insert or delete cells when the affected range intersects with pivot table.")
 #define STR_DPFIELD_GROUP_BY_SECONDS            NC_("STR_DPFIELD_GROUP_BY_SECONDS", "Seconds")
 #define STR_DPFIELD_GROUP_BY_MINUTES            NC_("STR_DPFIELD_GROUP_BY_MINUTES", "Minutes")