[DOC]: update figure

docs/start/intro.rst

@@ -65,7 +65,7 @@ Procedure of Learnware Paradigm
 - **Submitting Stage**: Developers voluntarily submit various learnwares to the learnware dock system, and the system conducts quality checks and further organization of these learnwares.
 - **Deploying Stage**: When users submit task requirements, the learnware dock system automatically selects whether to recommend a single learnware or a combination of multiple learnwares and provides efficient deployment methods. Whether it's a single learnware or a combination of multiple learnwares, the system offers convenient learnware reuse interfaces.
 
-.. image:: ../_static/img/learnware_market.jpg
+.. image:: ../_static/img/learnware_market.svg
    :align: center