[FIX] fix CI yaml error

.github/workflows/install_learnware_with_pip.yaml

@@ -25,7 +25,7 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
-     - name: Add conda to system path
+    - name: Add conda to system path
       run: |
         # $CONDA is an environment variable pointing to the root of the miniconda directory
         echo $CONDA/bin >> $GITHUB_PATH

.github/workflows/install_learnware_with_source.yaml

@@ -25,7 +25,7 @@ jobs:
       with:
         python-version: ${{ matrix.python-version }}
 
-     - name: Add conda to system path
+    - name: Add conda to system path
       run: |
         # $CONDA is an environment variable pointing to the root of the miniconda directory
         echo $CONDA/bin >> $GITHUB_PATH