Fixing image path

2-Regression/4-Logistic/solution/R/lesson_4-R.ipynb

@@ -6,7 +6,7 @@
             "source": [
                 "## Build a logistic regression model - Lesson 4\n",
                 "\n",
-                "![Logistic vs. linear regression infographic](https://github.com/microsoft/ML-For-Beginners/blob/main/2-Regression/4-Logistic/images/linear-vs-logistic.png)\n",
+                "![Logistic vs. linear regression infographic](../images/linear-vs-logistic.png)\n",
                 "\n",
                 "#### **[Pre-lecture quiz](https://gray-sand-07a10f403.1.azurestaticapps.net/quiz/15/)**\n",
                 "\n",