[docs][improve] convert starrocks logo to svg

README.md

@@ -59,7 +59,7 @@ Addax supports more than 20 SQL and NoSQL [data sources](support_data_sources.md
 <td><img src="./docs/images/logos/sqlserver.svg" height="50px" alt="SQLServer" style="border: 1px solid #ddd;"></td> 
 </tr>
 <tr>
-<td><img src="./docs/images/logos/starrocks.png" height="50px" alt="Starrocks" style="border: 1px solid #ddd;"></td>   
+<td><img src="./docs/images/logos/starrocks.svg" height="50px" alt="Starrocks" style="border: 1px solid #ddd;"></td>   
 <td><img src="./docs/images/logos/sybase.svg" height="50px" alt="Sybase" style="border: 1px solid #ddd;"></td>  
 <td><img src="./docs/images/logos/tdengine.svg" height="50px" alt="TDengine"  style="border: 1px solid #ddd;"></td>   
 <td><img src="./docs/images/logos/trino.svg" height="50px" alt="Trino" style="border: 1px solid #ddd;"></td>  

README_zh.md

@@ -56,7 +56,7 @@ Addax 支持超过 20 种[关系型和非关系型数据库](support_data_source
 <td><img src="./docs/images/logos/sqlserver.svg" height="50px" alt="SQLServer" style="border: 1px solid #ddd;"></td> 
 </tr>
 <tr>
-<td><img src="./docs/images/logos/starrocks.png" height="50px" alt="Starrocks" style="border: 1px solid #ddd;"></td>   
+<td><img src="./docs/images/logos/starrocks.svg" height="50px" alt="Starrocks" style="border: 1px solid #ddd;"></td>   
 <td><img src="./docs/images/logos/sybase.svg" height="50px" alt="Sybase" style="border: 1px solid #ddd;"></td>  
 <td><img src="./docs/images/logos/tdengine.svg" height="50px" alt="TDengine"  style="border: 1px solid #ddd;"></td>   
 <td><img src="./docs/images/logos/trino.svg" height="50px" alt="Trino" style="border: 1px solid #ddd;"></td>