[out.ptr] Add period at end of "Returns"

Author: Andreas-Krug

source/memory.tex

@@ -5512,7 +5512,7 @@
 
 \pnum
 \returns
-\tcode{out_ptr_t<Smart, P, Args\&\&...>(s, std::forward<Args>(args)...)}
+\tcode{out_ptr_t<Smart, P, Args\&\&...>(s, std::forward<Args>(args)...)}.
 \end{itemdescr}
 
 \rSec3[inout.ptr.t]{Class template \tcode{inout_ptr_t}}