fix(gotenberg): use command flags

Gotenberg v7 does not use environment variables anymore, but command's flags.

See: https://gotenberg.dev/docs/get-started/docker-compose#modules-properties

docs/configuration.rst

@@ -446,8 +446,9 @@ requires are as follows:
         gotenberg:
             image: gotenberg/gotenberg:7
             restart: unless-stopped
-            environment:
-                CHROMIUM_DISABLE_ROUTES: 1
+            command:
+                - "gotenberg"
+                - "--chromium-disable-routes=true"
 
         tika:
             image: apache/tika

docs/troubleshooting.rst

@@ -106,7 +106,7 @@ You may experience these errors when using the optional TIKA integration:
 Gotenberg is a server that converts Office documents into PDF documents and has a default timeout of 30 seconds.
 When conversion takes longer, Gotenberg raises this error.
 
-You can increase the timeout by configuring an environment variable for Gotenberg (see also `here <https://gotenberg.dev/docs/modules/api#properties>`__).
+You can increase the timeout by configuring a command flag for Gotenberg (see also `here <https://gotenberg.dev/docs/modules/api#properties>`__).
 If using docker-compose, this is achieved by the following configuration change in the ``docker-compose.yml`` file:
 
 .. code:: yaml
@@ -114,9 +114,10 @@ If using docker-compose, this is achieved by the following configuration change
     gotenberg:
         image: gotenberg/gotenberg:7
         restart: unless-stopped
-        environment:
-            CHROMIUM_DISABLE_ROUTES: 1
-            API_PROCESS_TIMEOUT: 60
+        command:
+            - "gotenberg"
+            - "--chromium-disable-routes=true"
+            - "--api-timeout=60"
 
 Permission denied errors in the consumption directory
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