fix cpic source error

source/cpic/tutorials.rst

@@ -14,8 +14,8 @@
 .. toctree::
    :maxdepth: 1
 
-   目标仿真模块 </notebooks/1_target_example.ipynb>
-   焦面模块 </notebooks/2_focus_example.ipynb>
-   观测效应仿真模块 </notebooks/3_obs_effect.ipynb>
-   相机仿真模块 </notebooks/4_camera_example.ipynb>
-   点扩散函数仿真模块 </notebooks/5_psf_example.ipynb>
+   目标仿真模块 </source/cpic/notebooks/1_target_example.ipynb>
+   焦面模块 </source/cpic/notebooks/2_focus_example.ipynb>
+   观测效应仿真模块 </source/cpic/notebooks/3_obs_effect.ipynb>
+   相机仿真模块 </source/cpic/notebooks/4_camera_example.ipynb>
+   点扩散函数仿真模块 </source/cpic/notebooks/5_psf_example.ipynb>