fix lab 5b typo

book/labs/5_measure_speeds/b_build_a_tool/lab5b.ipynb

@@ -7,7 +7,7 @@
    "source": [
     "# Week 13: Build a Distance Measurement Distance Tool Using an Ultrasonic Sensor (Data Cleaning and Micropython)\n",
     "<font size=\"6\">  Laboratory 5b </font> <br>\n",
-    "<font size=\"3\"> Last updated April 11, 2023</font>"
+    "<font size=\"3\"> Last updated Nov 30, 2023</font>"
    ]
   },
   {
@@ -140,10 +140,10 @@
    "execution_count": null,
    "id": "5582b504-f663-4a32-a296-2438c636ab83",
    "metadata": {
-       "trusted": true,
-       "editable": false,
-       "deletable": false
-    },
+    "deletable": false,
+    "editable": false,
+    "trusted": true
+   },
    "outputs": [],
    "source": [
     "%%sh\n",
@@ -354,7 +354,7 @@
    "source": [
     "Now that we have chosen that parameter sensibly, the microcontroller will spend less time waiting for an echo which will never arrive, and more time giving us useful information.\n",
     "\n",
-    "Make a measurement using your new version of `ultrasonic.py`, and save it as `second mesurement.txt`. Load it here, into the same variables `timestamp` and `echo`."
+    "Make a measurement using your new version of `ultrasonic.py`, and save it as `second measurement.txt`. Load it here, into the same variables `timestamp` and `echo`."
    ]
   },
   {