rmm: update translate_refspec with RMM entries

Update project entries with RMM details that can
be used during cloning of RMM repo in local setup.
Also, fixed REFSPEC name for RMM, and copy/paste
errors in the comment.

Change-Id: I9f70a9f2fa01990dc9a9d225013c8b99892a4852
Signed-off-by: Manish V Badarkhe <Manish.Badarkhe@arm.com>
diff --git a/script/clone_repos.sh b/script/clone_repos.sh
index 0aab33d..bf6cb3d 100755
--- a/script/clone_repos.sh
+++ b/script/clone_repos.sh
@@ -479,7 +479,7 @@
 		loc="TF_M_EXTRAS_PATH" clone_and_sync
 fi
 
-RMM_EXTRAS_REFSPEC="${rmm_refspec:-$RMM_REFSPEC}"
+RMM_REFSPEC="${rmm_refspec:-$RMM_REFSPEC}"
 if not_upon "$no_rmm"; then
 	url="$rmm_src_repo_url" name="tf-rmm" ref="RMM_REFSPEC" \
 		loc="RMM_PATH" clone_and_sync