Update README.md (#9958)

* Update README.md

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* Update README_cn.md

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* Update tutorial.ipynb

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>

Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

tutorial.ipynb

@@ -371,7 +371,7 @@
         "<div align=\"center\">\n",
         "\n",
         "  <a href=\"https://ultralytics.com/yolov5\" target=\"_blank\">\n",
-        "    <img width=\"1024\", src=\"https://github.com/ultralytics/assets/raw/master/yolov5/v62/splash_notebook.png\"></a>\n",
+        "    <img width=\"1024\", src=\"https://github.com/ultralytics/assets/raw/master/yolov5/v62/splash_readme.png\"></a>\n",
         "\n",
         "\n",
         "<br>\n",
@@ -975,4 +975,4 @@
       "outputs": []
     }
   ]
-}
+}