[temp.param, temp.constr.normal] Use \dotsc for a non-code ellipsis (#7397)

Author: lprv

source/templates.tex

@@ -354,8 +354,8 @@
 can be used to constrain a
 contextually-determined type or template type parameter pack \tcode{T}
 with a \grammarterm{constraint-expression} \tcode{E} defined as follows.
-If \tcode{Q} is of the form \tcode{C<A$_1$, $\cdots$, A$_n$>},
-then let \tcode{E$'$} be \tcode{C<T, A$_1$, $\cdots$, A$_n$>}.
+If \tcode{Q} is of the form \tcode{C<A$_1$, $\dotsc$, A$_n$>},
+then let \tcode{E$'$} be \tcode{C<T, A$_1$, $\dotsc$, A$_n$>}.
 Otherwise, let \tcode{E$'$} be \tcode{C<T>}.
 If \tcode{T} is not a pack,
 then \tcode{E} is \tcode{E$'$},
@@ -1930,9 +1930,9 @@
 the normal forms of \tcode{E1} and \tcode{E2}.
 
 \item
-The normal form of a concept-id \tcode{C<A$_1$, A$_2$, ..., A$_n$>}
+The normal form of a concept-id \tcode{C<A$_1$, A$_2$, $\dotsc$, A$_n$>}
 is the normal form of the \grammarterm{constraint-expression} of \tcode{C},
-after substituting \tcode{A$_1$, A$_2$, ..., A$_n$} for
+after substituting \tcode{A$_1$, A$_2$, $\dotsc$, A$_n$} for
 \tcode{C}{'s} respective template parameters in the
 parameter mappings in each atomic constraint.
 If any such substitution results in an invalid type or expression,