cfw docs

Reviewed-by: tischrei <tino.schreiber@t-systems.com>
Co-authored-by: lbelejka <lukas.belejkanic@t-systems.com>
Co-committed-by: lbelejka <lukas.belejkanic@t-systems.com>

otc_metadata/data/documents/cfw-api-ref.yaml

@@ -1,5 +1,4 @@
 ---
-environment: internal
 hc_location: api/cfw
 html_location: docs/cfw/api-ref
 link: /cloud-firewall/api-ref/

otc_metadata/data/documents/cfw-umn.yaml

@@ -1,5 +1,4 @@
 ---
-environment: internal
 hc_location: usermanual/cfw
 html_location: docs/cfw/umn
 link: /cloud-firewall/umn/

otc_metadata/data/services/cfw.yaml

@@ -1,5 +1,5 @@
 ---
-environment: internal
+environment: public
 repositories:
 - environment: internal
   repo: docs/cloud-firewall