Rename rl.md to rlmd.md

Author: stomfaig

rl.md rlmd.mdrl.md renamed to rlmd.md

@@ -311,4 +311,4 @@ The fundamental idea here can be explained as follows.
 [TRPO]: https://arxiv.org/abs/1502.05477
 [4]: proximal_methods
 [5]: trust_region_type_methods
-[GAE]: https://arxiv.org/abs/1506.02438
+[GAE]: https://arxiv.org/abs/1506.02438