Update links

README.rst

@@ -20,7 +20,7 @@ Features
 * Write API similar to the one used by IOStreams but much faster and more
   consistent.
 * Format API with `format string syntax
-  <http://cppformat.github.io/doc/latest#format-string-syntax>`__
+  <http://cppformat.readthedocs.org/en/latest/#format-string-syntax>`__
   similar to the one used by `str.format
   <http://docs.python.org/2/library/stdtypes.html#str.format>`__ in Python.
 * Support for user-defined types.
@@ -45,7 +45,7 @@ Features
   (-Wall -Wextra -pedantic).
 * Support for wide strings.
 
-See the `documentation <http://cppformat.github.io/doc/latest>`__ for more details.
+See the `documentation <http://cppformat.readthedocs.org/en/latest/>`__ for more details.
 
 Examples
 --------
@@ -92,10 +92,10 @@ An object of any user-defined type for which there is an overloaded
     // s == "The date is 2012-12-9"
 
 You can use the `FMT_VARIADIC
-<http://cppformat.github.io/doc/latest/#project0format_8h_1a65215c7dfcc0e942cd0798860877e86b>`__
+<http://cppformat.readthedocs.org/en/latest/#project0format_8h_1a65215c7dfcc0e942cd0798860877e86b>`__
 macro to create your own functions similar to `format
 <http://cppformat.github.io/doc/latest#fmt::format__StringRef.ArgListCR>`__ and
-`print <http://cppformat.github.io/doc/latest#fmt::print__StringRef.ArgListCR>`__
+`print <http://cppformat.readthedocs.org/en/latest#fmt::print__StringRef.ArgListCR>`__
 which take arbitrary arguments:
 
 .. code-block:: c++
@@ -374,7 +374,7 @@ Documentation License
 ---------------------
 
 The `Format String Syntax
-<http://cppformat.github.io/doc/latest#format-string-syntax>`__
+<http://cppformat.readthedocs.org/en/latest/#format-string-syntax>`__
 section in the documentation is based on the one from Python `string module
 documentation <http://docs.python.org/3/library/string.html#module-string>`__
 adapted for the current library. For this reason the documentation is