[fs.class.path] Add missing semicolon

Author: dgrunwald-qt

source/iostreams.tex

@@ -10518,7 +10518,7 @@
     template <class Source>
       path& operator=(const Source& source);
     template <class Source>
-      path& assign(const Source& source)
+      path& assign(const Source& source);
     template <class InputIterator>
       path& assign(InputIterator first, InputIterator last);