Update config.yml

Author: gkorland

.circleci/config.yml

@@ -7,12 +7,13 @@ jobs:
 
     steps:
       - checkout
+      - run: git submodule sync
+      - run: git submodule update --init      
+      
       - run:
           name: Install prerequisite
           command: sudo apt-get install -y clang
-      - run:
-          name: Install Submodules
-          command: git submodule add  https://github.com/RedisLabsModules/redismodule-rs
+
       - run:
           name: Version information
           command: rustc --version; cargo --version; rustup --version