Prefer https:// links in the docs site

All the changed urls are availible by way of https://. Most of them
already redirect.

docs/docsite/rst/user_guide/windows_usage.rst

@@ -43,7 +43,7 @@ Below are some examples of using all three options to install 7-Zip::
     # install/uninstall with win_package
     - name: download the 7-Zip package
       win_get_url:
-        url: http://www.7-zip.org/a/7z1701-x64.msi
+        url: https://www.7-zip.org/a/7z1701-x64.msi
         dest: C:\temp\7z.msi
 
     - name: ensure 7-Zip is installed via win_package
@@ -59,7 +59,7 @@ Below are some examples of using all three options to install 7-Zip::
     # install/uninstall with win_command
     - name: download the 7-Zip package
       win_get_url:
-        url: http://www.7-zip.org/a/7z1701-x64.msi
+        url: https://www.7-zip.org/a/7z1701-x64.msi
         dest: C:\temp\7z.msi
     
     - name: check if 7-Zip is already installed
@@ -485,7 +485,7 @@ guides for Windows modules differ substantially from those for standard standard
        Best practices advice
    :ref:`List of Windows Modules <windows_modules>`
        Windows specific module list, all implemented in PowerShell
-   `User Mailing List <http://groups.google.com/group/ansible-project>`_
+   `User Mailing List <https://groups.google.com/group/ansible-project>`_
        Have a question?  Stop by the google group!
    `irc.freenode.net <http://irc.freenode.net>`_
        #ansible IRC chat channel