Add link to current item when capturing simple TODO tasks

Sometimes, I need those, and it's easier to delete references than to add them.
Same with dates, where this behavior is already used.

init.el

@@ -1112,6 +1112,7 @@
                  ,(concat "* TODO [#B] %^{What}\n"
                           "SCHEDULED: %(org-insert-time-stamp (org-read-date nil t \"+0d\"))\n"
                           ":PROPERTIES:\n:CREATED: %U\n:END:\n"
+                          "%a\n"
                           "%?"))
                 ("T" "Complex Tasks")
                 ("TC" "Record new complex task with first item"