misc: update c-ares URL

Author: saghul

README.rst

@@ -13,7 +13,7 @@ pycares: Python interface for c-ares
     :target: https://github.com/saghul/pycares/actions
 
 pycares is a Python module which provides an interface to c-ares.
-`c-ares <http://c-ares.haxx.se>`_ is a C library that performs
+`c-ares <https://c-ares.org>`_ is a C library that performs
 DNS requests and name resolutions asynchronously.
 
 

docs/constants.rst

@@ -18,7 +18,7 @@ Channel flags
 .. py:data:: pycares.ARES_FLAG_NOCHECKRESP
 
 .. seealso::
-    `c-ares documentation for ares_init <http://c-ares.haxx.se/ares_init.html>`_
+    `c-ares documentation for ares_init <https://c-ares.org/ares_init.html>`_
 
 
 Nameinfo constants
@@ -41,7 +41,7 @@ Nameinfo constants
 .. py:data:: pycares.ARES_NI_IDN_USE_STD3_ASCII_RULES
 
 .. seealso::
-    `c-ares documentation for ares_getnameinfo <http://c-ares.haxx.se/ares_getnameinfo.html>`_
+    `c-ares documentation for ares_getnameinfo <https://c-ares.org/ares_getnameinfo.html>`_
 
 Others
 ======

docs/index.rst

@@ -7,7 +7,7 @@ Welcome to pycares documentation!
 Python interface for c-ares.
 
 pycares is a Python module which provides an interface to c-ares.
-c-ares (http://c-ares.haxx.se/) c-ares is a C library that performs
+c-ares (https://c-ares.org) c-ares is a C library that performs
 DNS requests and name resolves asynchronously.