Remove a newline symbol from empty value of 'enable_presence_by_hs_url' element/schildichat config option.

group_vars/matrix_servers

@@ -4049,7 +4049,7 @@ matrix_client_element_self_check_validate_certificates: "{{ matrix_playbook_ssl_
 
 matrix_client_element_registration_enabled: "{{ matrix_synapse_enable_registration }}"
 
-matrix_client_element_enable_presence_by_hs_url: |
+matrix_client_element_enable_presence_by_hs_url: |-
   {{
     none
     if matrix_synapse_presence_enabled
@@ -4166,7 +4166,7 @@ matrix_client_schildichat_self_check_validate_certificates: "{{ matrix_playbook_
 
 matrix_client_schildichat_registration_enabled: "{{ matrix_synapse_enable_registration }}"
 
-matrix_client_schildichat_enable_presence_by_hs_url: |
+matrix_client_schildichat_enable_presence_by_hs_url: |-
   {{
     none
     if matrix_synapse_presence_enabled