Update roles/matrix-cactus-comments/templates/cactus_appservice.yaml.j2

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

roles/matrix-cactus-comments/templates/cactus_appservice.yaml.j2

@@ -7,8 +7,8 @@ url: "http://matrix-cactus-comments:{{ matrix_cactus_comments_container_port }}"
 # Unique tokens used to authenticate requests between our service and the
 # homeserver (and the other way). Use the sha256 hashes of something random.
 # CHANGE THESE VALUES.
-as_token: "{{ matrix_cactus_comments_as_token }}"
-hs_token: "{{ matrix_cactus_comments_hs_token }}"
+as_token: {{ matrix_cactus_comments_as_token | to_json }}
+hs_token: {{ matrix_cactus_comments_hs_token | to_json }}
 
 # User associated with our service. In this case "@cactusbot:example.com"
 sender_localpart: "{{ matrix_cactus_comments_user_id }}"