[temp.deduct.funcaddr] Add missing \tcode

Author: morinmorin

source/templates.tex

@@ -7711,7 +7711,7 @@
 \tcode{A},
 and the deduction is done as
 described in~\ref{temp.deduct.type}.
-Otherwise, deduction is performed with empty sets of types P and A.
+Otherwise, deduction is performed with empty sets of types \tcode{P} and \tcode{A}.
 
 \pnum
 A placeholder type\iref{dcl.spec.auto} in the return type of a