fix wrong parameter, and clean up documentation

mmucklo/queue-bundle/4.0/config/packages/dtc_queue.yaml

@@ -2,16 +2,20 @@ dtc_queue:
     # For full configuration options see:
     #   https://github.com/mmucklo/DtcQueueBundle/blob/master/Resources/doc/full-configuration.md
     manager:
-        # This should typically be set to one of [odm|orm|beanstalkd|rabbit_mq|redis]
+        # This parameter is required and should typically be set to one of:
+        #   [odm|orm|beanstalkd|rabbit_mq|redis]
         job: odm
-    record:
+    timings:
         # Set this to true to record job timing history in a separate table
-        #  (note: for beanstalkd|rabbit_mq|redis, job_timing or run needs to be set to one of
-        #   orm|odm under the manager section)
-        timings: false
+        #  (note: for beanstalkd|rabbit_mq|redis, job_timing or run needs to
+        #   be set to one of orm|odm under the manager section)
+        record: false
     odm:
-        # This only needs to be modified if you want to use a different document manager than the default one
-        #  (there is a similar parameter for entity_manager if you're using orm)
+        # This is only necessary if still using an "odm" manager.
+        #   It only needs to be modified if you want to use a different
+        #   document manager than the default one
+        #   (there is a similar parameter for entity_manager if you're
+        #   using orm)
         #
         # If you don't use odm at all, this can safely be ignored or deleted
         document_manager: default
@@ -19,5 +23,5 @@ dtc_queue:
         max: 255
         direction: desc
     admin:
-        # chartjs is used to render the job timings graph
+        # chartjs is used to render the job timings graph in the admin section
         chartjs: 'https://cdnjs.cloudflare.com/ajax/libs/Chart.js/2.7.1/Chart.bundle.min.js'