[expr.prim.lambda.closure] Fix wording inaccuracy in note

A generic lambda has a function call operator template, not a function call operator.

Author: danra

source/expressions.tex

@@ -1645,7 +1645,7 @@
 or operator template is the \grammarterm{requires-clause}
 of the \grammarterm{lambda-declarator}, if any.
 \begin{note}
-The function call operator for a generic lambda might be
+The function call operator template for a generic lambda might be
 an abbreviated function template\iref{dcl.fct}.
 \end{note}
 \begin{example}