Update spec based on comments and suggestions

spec.bs

@@ -8418,9 +8418,9 @@ an {{unsigned short}}-or-null |experimentGroupId|, an [=origin=] |topLevelOrigin
     1. [=list/Append=] |group|'s [=interest group/trusted bidding signals keys=] into
       |compressionGroupMap|[|compressionGroupId|][|partitionId|]["bidding_keys"].
 1. [=map/For each=] |id| → |group| in |compressionGroupMap|:
-  1. Let |compressionGroup| be an empty [=bidding compression group=].
-  1. Set |compressionGroup|'s [=bidding compression group/compression group id=] to |id|.
-  1. Set |compressionGroup|'s [=bidding compression group/partition=] to an empty [=list=].
+  1. Let |compressionGroup| be a [=bidding compression group=], whose
+	  [=bidding compression group/compression group id=] is |id|, and
+	  [=bidding compression group/partition=] is an empty [=list=].
   1. [=list/For each=] |partition| in |group|'s [=map/values=]:
     1. [=list/Append=] |partition| to |compressionGroup|'s [=bidding compression group/partition=].
   1. [=list/Append=] |compressionGroup| to |compressionGroups|.
@@ -8807,7 +8807,6 @@ To <dfn>batch and fetch trusted scoring signals</dfn> given a [=trusted scoring
     1. Otherwise:
       1. Select a non-[=list/is empty|empty=] [=set/subset=] of |batcher|'s [=trusted scoring
         signals batcher/request map=][|key|], called |entriesToBatch|.
-      1. Set |entriesToBatch| to |batcher|'s [=trusted scoring signals batcher/request map=][|key|].
       1. [=map/Remove=] |key| from |batcher|'s [=trusted scoring signals batcher/request map=].
       1. Let « |requestBody|, |renderUrlIdMap|, |context| » be the result of [=building batched
         trusted key value scoring signals request body=] for |entriesToBatch|.
@@ -8833,6 +8832,7 @@ To <dfn>batch and fetch trusted scoring signals</dfn> given a [=trusted scoring
           1. If |scoringDataVersionMap| is not null:
             1. Set |result|'s [=trusted scoring signals reply/data version=] to |scoringDataVersionMap|
               [|entry|'s [=URL serializer|serialized=] [=trusted scoring signals request/render URL=]].
+          1. Set |entry|'s [=trusted scoring signals request/reply=] to |result|.
       1. Otherwise, [=list/for each=] |entry| in |entriesToBatch|:
         1. Set |entry|'s [=trusted scoring signals request/reply=] to failure.