[template.slice.array] Harmonize presentation with neighboring parallel statements (#2024)

Author: jensmaurer

source/numerics.tex

@@ -7818,21 +7818,16 @@
 \end{codeblock}
 
 \pnum
-The
-\tcode{slice_array}
-template is a helper template used by the
-\tcode{slice}
-subscript operator
-
+This template is a helper template used by the
+\tcode{slice} subscript operator
 \begin{codeblock}
 slice_array<T> valarray<T>::operator[](slice);
 \end{codeblock}
 
+\pnum
 It has reference semantics to a subset of an array specified by a
 \tcode{slice}
 object.
-
-\pnum
 \begin{example}
 The expression
 \tcode{a[slice(1, 5, 3)] = b;}
@@ -8105,7 +8100,7 @@
 
 \pnum
 This template is a helper template used by the
-\tcode{slice}
+\tcode{gslice}
 subscript operator
 
 \indexlibrary{\idxcode{gslice_array}}%