update problem titles

Author: lukebarousse

4_Problems/2_01_Pandas Accessing Data.ipynb

@@ -35,7 +35,7 @@
    "id": "a80f4fde",
    "metadata": {},
    "source": [
-    "## 🟩 Select First 5 Rows (2.1.1)"
+    "## 🟩 Select First 5 Rows with .iloc() (2.1.1)"
    ]
   },
   {
@@ -59,7 +59,7 @@
    "id": "99a28184",
    "metadata": {},
    "source": [
-    "## 🟩 Get Rows and Columns (2.1.2)"
+    "## 🟩 Get Rows and Columns with .loc() (2.1.2)"
    ]
   },
   {