(Other Repeating Search): Mention that Occur mode

supports the next-error functionality.

man/search.texi

@@ -1286,6 +1286,9 @@ searched and moves point to the original of the chosen occurrence.
 @kbd{o} and @kbd{C-o} display the match in another window; @kbd{C-o}
 does not select it.
 
+Occur mode supports the @code{next-error} functionality described in
+in @ref{Compilation Mode}.
+
 @item M-x list-matching-lines
 Synonym for @kbd{M-x occur}.