Tweak exercise placeholders.

Author: stefmolin

notebooks/1-getting_started_with_pandas.ipynb

@@ -1046,7 +1046,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 1.1 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 1.1` above to open the workbook.ipynb file\n",
     "\n",
     "# WARNING: if you complete the exercise here, your cell numbers\n",
@@ -1070,7 +1070,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 1.2 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 1.2` above to open the workbook.ipynb file\n",
     "\n",
     "# WARNING: if you complete the exercise here, your cell numbers\n",
@@ -2562,7 +2562,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 1.3 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 1.3` above to open the workbook.ipynb file"
    ]
   },
@@ -2583,7 +2583,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 1.4 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 1.4` above to open the workbook.ipynb file"
    ]
   },

notebooks/2-data_wrangling.ipynb

@@ -1234,7 +1234,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 2.1 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 2.1` above to open the workbook.ipynb file\n",
     "\n",
     "# WARNING: if you complete the exercise here, your cell numbers\n",
@@ -2060,7 +2060,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 2.2 in the workbook.ipynb file"
+    "# Complete this exercise in the workbook.ipynb file"
    ]
   },
   {
@@ -3891,7 +3891,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 2.3 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 2.3` above to open the workbook.ipynb file\n",
     "\n",
     "# WARNING: if you complete the exercise here, your cell numbers\n",
@@ -4550,7 +4550,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 2.4 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 2.4` above to open the workbook.ipynb file\n",
     "\n",
     "# WARNING: if you complete the exercise here, your cell numbers\n",
@@ -7866,7 +7866,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 2.5 in the workbook.ipynb file\n",
+    "# Complete this exercise in the workbook.ipynb file\n",
     "# Click on `Exercise 2.5` above to open the workbook.ipynb file"
    ]
   },

notebooks/3-data_visualization.ipynb

@@ -5326,7 +5326,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 3.1 in the workbook.ipynb file"
+    "# Complete this exercise in the workbook.ipynb file"
    ]
   },
   {
@@ -8711,7 +8711,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 3.2 in the workbook.ipynb file"
+    "# Complete this exercise in the workbook.ipynb file"
    ]
   },
   {
@@ -12150,7 +12150,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# Complete exercise 3.3 in the workbook.ipynb file"
+    "# Complete this exercise in the workbook.ipynb file"
    ]
   },
   {
@@ -12170,7 +12170,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "# TIP: the solution to exercise 3.1 can be found at\n",
+    "# TIP: the solution to Exercise 3.1 can be found at\n",
     "# https://stefmolin.github.io/pandas-workshop/slides/html/workshop.slides.html#/solution-3-1"
    ]
   },