swap problems from easy to medium

Author: lukebarousse

4_Problems/1_31_Matplotlib Pandas Plotting.ipynb

@@ -54,10 +54,10 @@
   },
   {
    "cell_type": "markdown",
-   "id": "651ebbb5",
+   "id": "278d662b",
    "metadata": {},
    "source": [
-    "## 🟩 Job Postings Trend Line Plot (1.31.2)"
+    "## 🟩 Top Job Locations (1.31.2)"
    ]
   },
   {
@@ -78,10 +78,10 @@
   },
   {
    "cell_type": "markdown",
-   "id": "278d662b",
+   "id": "651ebbb5",
    "metadata": {},
    "source": [
-    "## 🟨 Top Job Locations (1.31.3)"
+    "## 🟨 Job Postings Trend Line Plot (1.31.3)"
    ]
   },
   {