Fix python-apt install on Debian 9

CHANGELOG.md

@@ -11,6 +11,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 #### Fixed
 
 - Python virtualenv configuration
+- Removing ssl certificate when deleting a site
 
 #### v3.13.0 - 2020-10-25
 

install

@@ -446,7 +446,7 @@ wo_install() {
         source /opt/wo/bin/activate
         python3 -m pip install -U pip setuptools wheel
         if [ "$wo_linux_distro" = "Debian" ] || [ "$wo_linux_distro" = "Raspbian" ]; then
-            if [ "$wo_distro_codename" = "strech" ]; then
+            if [ "$wo_distro_codename" = "stretch" ]; then
                 python3 -m pip install git+https://salsa.debian.org/apt-team/python-apt.git@1.4.y#egg=python-apt
             else
                 python3 -m pip install git+https://salsa.debian.org/apt-team/python-apt.git@1.8.4.y#egg=python-apt