[alg.transform] Relayout list of requirements as itemization

Author: tkoeppe

source/algorithms.tex

@@ -1581,12 +1581,12 @@
 \requires
 \tcode{op} and \tcode{binary_op}
 shall not invalidate iterators or subranges, or modify elements in the ranges
-\crange{first1}{last1},
-\crange{first2}{first2 + (last1 - first1)},
-and
-\crange{result}
-{result + (last1 - first1)}.\footnote{The use of fully
+\begin{itemize}
+\item \crange{first1}{last1},
+\item \crange{first2}{first2 + (last1 - first1)}, and
+\item \crange{result}{result + (last1 - first1)}.\footnote{The use of fully
 closed ranges is intentional.}
+\end{itemize}
 
 \pnum
 \returns