[temp.arg.template] Add missing "template" when referring to template template parameters

Author: eisenwave

source/templates.tex

@@ -1472,10 +1472,10 @@
 \begin{itemize}
 \item
 \tcode{A} denotes a class template or an alias template and
-\tcode{P} is a type template parameter,
+\tcode{P} is a type template template parameter,
 \item
 \tcode{A} denotes a variable template and
-\tcode{P} is a variable template parameter, or
+\tcode{P} is a variable template template parameter, or
 \item
 \tcode{A} denotes a concept and
 \tcode{P} is a concept template parameter.