Fix emsdk path

Author: juj

.circleci/config.yml

@@ -91,7 +91,7 @@ commands:
       - run:
           name: npm install
           command: |
-            source emsdk_master/emsdk_env.sh
+            source emsdk-master/emsdk_env.sh
             NODE_DIR=$(dirname $EMSDK_NODE)
             export PATH=$NODE_DIR:$PATH
             npm install