Readme: change http to https

Author: gsmolk

README.rst

@@ -21,8 +21,8 @@ Installation
 DEB packages for Debian|Ubuntu:
 .. code-block:: bash
 
-    echo "deb [arch=amd64] http://repo.postgrespro.ru/mamonsu/latest/deb/ $(lsb_release -cs) main-$(lsb_release -cs)" > /etc/apt/sources.list.d/mamonsu.list
-    wget -O - http://repo.postgrespro.ru/mamonsu/keys/GPG-KEY-MAMONSU | sudo apt-key add - && sudo apt-get update
+    echo "deb [arch=amd64] https://repo.postgrespro.ru/mamonsu/latest/deb/ $(lsb_release -cs) main-$(lsb_release -cs)" > /etc/apt/sources.list.d/mamonsu.list
+    wget -O - https://repo.postgrespro.ru/mamonsu/keys/GPG-KEY-MAMONSU | sudo apt-key add - && sudo apt-get update
     sudo apt-get install mamonsu
 
 RPM packages for Centos: