Update harmonyos.yml

.github/workflows/harmonyos.yml

@@ -27,9 +27,9 @@ jobs:
         tar -xf ohos-sdk-windows_linux-public.tar.gz
         cd ohos-sdk/linux
         unzip -q native-linux-x64-4.1.7.8-Release.zip
+        cd -
     - name: build-armv8
       run: |
-       cd
        mkdir build && cd build
        ${{ env.OHOS_NDK_CMAKE }} ${{ env.COMMON_CMAKE_OPTIONS }} -DOHOS_ARCH="arm64-v8a" \
        -DTARGET=ARMV8 ..