Use dollar sign instead of backtick

Co-Authored-By: Sandro <sandro.jaeckel@gmail.com>

inventory/scripts/generate-jitsi-passwords.sh

@@ -35,11 +35,11 @@ function get_domain_dir() {
 cd ../host_vars
 get_domain_dir
 
-JICOFO_COMPONENT_SECRET=`generatePassword`
-JICOFO_AUTH_PASSWORD=`generatePassword`
-JVB_AUTH_PASSWORD=`generatePassword`
-JIBRI_RECORDER_PASSWORD=`generatePassword`
-JIBRI_XMPP_PASSWORD=`generatePassword`
+JICOFO_COMPONENT_SECRET=$(generatePassword)
+JICOFO_AUTH_PASSWORD=$(generatePassword)
+JVB_AUTH_PASSWORD=$(generatePassword)
+JIBRI_RECORDER_PASSWORD=$(generatePassword)
+JIBRI_XMPP_PASSWORD=$(generatePassword)
 
 echo "" >> ../host_vars/${domain}/vars.yml
 echo "Jitsi passwords generated by inventory/scripts/gen-passwords.sh" >> ../host_vars/${domain}/vars.yml