Double quotes

src/freedombone-app-matrix

         echo '# Matrix Server' >> $matrix_nginx_site
         echo 'server {' >> $matrix_nginx_site
         echo "  listen ${MATRIX_HTTP_PORT} ssl;" >> $matrix_nginx_site
-        echo '  listen [::]:${MATRIX_HTTP_PORT} ssl;' >> $matrix_nginx_site
+        echo "  listen [::]:${MATRIX_HTTP_PORT} ssl;" >> $matrix_nginx_site
         echo "  server_name ${DEFAULT_DOMAIN_NAME};" >> $matrix_nginx_site
         echo '' >> $matrix_nginx_site
         echo '  # Security' >> $matrix_nginx_site
         echo '' >> $matrix_nginx_site
         echo 'server {' >> $matrix_nginx_site
         echo "  listen ${MATRIX_ID_HTTP_PORT} ssl;" >> $matrix_nginx_site
-        echo '  listen [::]:${MATRIX_ID_HTTP_PORT} ssl;' >> $matrix_nginx_site
+        echo "  listen [::]:${MATRIX_ID_HTTP_PORT} ssl;" >> $matrix_nginx_site
         echo "  server_name ${DEFAULT_DOMAIN_NAME};" >> $matrix_nginx_site
         echo '' >> $matrix_nginx_site
         echo '  # Security' >> $matrix_nginx_site

src/freedombone-utils-turn

         echo '# TURN Server' >> $turn_nginx_site
         echo 'server {' >> $turn_nginx_site
         echo "  listen ${TURN_HTTP_PORT} ssl;" >> $turn_nginx_site
-        echo '  listen [::]:${TURN_HTTP_PORT} ssl;' >> $turn_nginx_site
+        echo "  listen [::]:${TURN_HTTP_PORT} ssl;" >> $turn_nginx_site
         echo "  server_name ${DEFAULT_DOMAIN_NAME};" >> $turn_nginx_site
         echo '' >> $turn_nginx_site
         echo '  # Security' >> $turn_nginx_site