[valarray.cassign] Add period at end of "Returns"

Andreas-Krug · tkoeppe · commit c355072152d7 · 2025-06-20T09:19:45.000+03:00
diff --git a/source/numerics.tex b/source/numerics.tex
@@ -7919,7 +7919,7 @@
 
 \pnum
 \returns
-\tcode{*this}
+\tcode{*this}.
 
 \pnum
 \remarks
