Add missing fi

Author: AlenkaF

ci/scripts/install_python.sh

@@ -53,6 +53,7 @@ if [ "$platform" = "macOS" ]; then
         fname="python-${full_version}rc3-macos11.pkg"
     else
         fname="python-${full_version}-macos11.pkg"
+    fi
     wget "https://www.python.org/ftp/python/${full_version}/${fname}"
 
     echo "Installing Python..."