Update path to flowchart diagram

Author: kushalbakshi

notebooks/tutorial.ipynb

@@ -18,7 +18,7 @@
     "tutorial you will have a clear grasp on setting up and integrating `element-array-ephys`\n",
     "into your specific research projects and lab. \n",
     "\n",
-    "![flowchart](https://github.com/datajoint/element-array-ephys/blob/main/images/diagram_flowchart.svg)\n",
+    "![flowchart](../images/diagram_flowchart.svg)\n",
     "\n",
     "### Prerequisites\n",
     "\n",