fix(pillar): rearrange `tofs` block to avoid `yamllint` error

pillar.example

       - filter: =f_messages
       - destination: =df_messages
 
-  # tofs:
-  #   The files_switch key serves as a selector for alternative
-  #   directories under the formula files directory. See TOFS pattern
-  #   doc for more info.
-  #   Note: Any value not evaluated by `config.get` will be used literally.
-  #   This can be used to set custom paths, as many levels deep as required.
-  #   files_switch:
-  #     - any/path/can/be/used/here
-  #     - id
-  #     - roles
-  #     - osfinger
-  #     - os
-  #     - os_family
-  #   All aspects of path/file resolution are customisable using the options below.
-  #   This is unnecessary in most cases; there are sensible defaults.
-  #   path_prefix: template_alt
-  #   dirs:
-  #     files: files_alt
-  #     default: default_alt
-  #   The entries under `source_files` are prepended to the default source files
-  #   given for the state
-  #   source_files:
-  #     syslog_ng/config/install:
-  #       - 'alt_syslog-ng.conf'
+  tofs:
+    # # The files_switch key serves as a selector for alternative
+    # # directories under the formula files directory. See TOFS pattern
+    # # doc for more info.
+    # # Note: Any value not evaluated by `config.get` will be used literally.
+    # # This can be used to set custom paths, as many levels deep as required.
+    # files_switch:
+    #   - any/path/can/be/used/here
+    #   - id
+    #   - roles
+    #   - osfinger
+    #   - os
+    #   - os_family
+    # # All aspects of path/file resolution are customisable using the options below.
+    # # This is unnecessary in most cases; there are sensible defaults.
+    # path_prefix: template_alt
+    # dirs:
+    #   files: files_alt
+    #   default: default_alt
+    # # The entries under `source_files` are prepended to the default source files
+    # # given for the state
+    source_files:
+      syslog_ng/config/install:
+        - 'alt_syslog-ng.conf'