feedback: use three dots to indicate processing, like everywhere else

For all occurrences, run:  grep '\.\.\."))' src/*.c

src/text.c

@@ -2612,7 +2612,7 @@ void do_linter(void)
 
 	blank_bottombars();
 	currmenu = MLINTER;
-	statusbar(_("Invoking linter, please wait"));
+	statusbar(_("Invoking linter..."));
 
 	construct_argument_list(&lintargs, openfile->syntax->linter, openfile->filename);