[EDITORIAL] Add some missing periods.

algorithms.tex

@@ -2755,7 +2755,7 @@
 \effects Permutes the elements in the range \range{first}{last} such that there exists an iterator \tcode{i}
 such that for every iterator \tcode{j} in the range \range{first}{i}
 \tcode{invoke(pred, invoke(proj, *j)) != false}, and for every iterator \tcode{k} in the
-range \range{i}{last}, \tcode{invoke(pred, invoke(proj, *k)) == false}
+range \range{i}{last}, \tcode{invoke(pred, invoke(proj, *k)) == false}.
 
 \pnum
 \returns An iterator \tcode{i} such that for every iterator \tcode{j} in the range \range{first}{i}
@@ -2788,7 +2788,7 @@
 \effects Permutes the elements in the range \range{first}{last} such that there exists an iterator \tcode{i}
 such that for every iterator \tcode{j} in the range \range{first}{i}
 \tcode{invoke(pred, invoke(proj, *j)) != false}, and for every iterator \tcode{k} in the
-range \range{i}{last}, \tcode{invoke(pred, invoke(proj, *k)) == false}
+range \range{i}{last}, \tcode{invoke(pred, invoke(proj, *k)) == false}.
 
 \pnum
 \returns