!195 Update Release Notes

From: @pkuliuliu
Reviewed-by: @jxlang910,@jxlang910,@zhidanliu
Signed-off-by: @jxlang910,@jxlang910,@zhidanliu

RELEASE.md

@@ -1,12 +1,6 @@
-# MindSpore 1.2.0 Release Notes
+# MindArmour 1.2.0-rc1
 
-## MindArmour
-
-### Contributors
-
-Thanks goes to these wonderful people:
-
-han.yin
+## MindArmour 1.2.0 Release Notes
 
 ### Major Features and Improvements
 
@@ -39,6 +33,12 @@ han.yin
 
 [BUGFIX] ...
 
+### Contributors
+
+Thanks goes to these wonderful people:
+
+han.yin
+
 # MindArmour 1.1.0 Release Notes
 
 ## MindArmour