Update

[ghstack-poisoned]

Author: Vincent Moens

docs/source/reference/envs.rst

@@ -440,6 +440,7 @@ TorchRL offers a series of custom built-in environments.
     ChessEnv
     PendulumEnv
     TicTacToeEnv
+    LLMEnv
     LLMHashingEnv
 
 
@@ -1033,6 +1034,7 @@ to be able to create this other composition:
     Compose
     ConditionalSkip
     Crop
+    DataLoadingPrimer
     DTypeCastTransform
     DeviceCastTransform
     DiscreteActionProjection