Fix a couple of deprecated things.

doc/api.rst

@@ -115,7 +115,7 @@ template and implement ``parse`` and ``format`` methods::
 
     template <typename FormatContext>
     auto format(const point &p, FormatContext &ctx) {
-      return format_to(ctx.begin(), "({:.1f}, {:.1f})", p.x, p.y);
+      return format_to(ctx.out(), "({:.1f}, {:.1f})", p.x, p.y);
     }
   };
   }
@@ -129,7 +129,7 @@ Then you can pass objects of type ``point`` to any formatting function::
 In the example above the ``formatter<point>::parse`` function ignores the
 contents of the format string referred to by ``ctx.begin()`` so the object will
 always be formatted in the same way. See ``formatter<tm>::parse`` in
-:file:`fmt/time.h` for an advanced example of how to parse the format string and
+:file:`fmt/chrono.h` for an advanced example of how to parse the format string and
 customize the formatted output.
 
 You can also reuse existing formatters, for example::