[temp.over] itemize parts of long paragraph (#6443)

Author: Eisenwave

source/templates.tex

@@ -8757,16 +8757,18 @@
 can be used with that function template to instantiate a function template
 specialization that can be invoked with the call arguments or,
 for conversion function templates, that can convert to the required type.
-For each function template, if the argument deduction and checking succeeds,
-the
+For each function template:
+\begin{itemize}
+\item If the argument deduction and checking succeeds, the
 \grammarterm{template-argument}{s}
 (deduced and/or explicit)
 are used to synthesize the declaration of
 a single function template specialization which is
 added to the candidate functions set to be used in overload resolution.
-If, for a given function template, argument deduction fails or
+\item If the argument deduction fails or
 the synthesized function template specialization would be ill-formed,
 no such function is added to the set of candidate functions for that template.
+\end{itemize}
 The complete set of candidate functions includes all the synthesized
 declarations and all of the non-template functions found by name lookup.
 The synthesized declarations are