docs: refine markdown instructions for clarity

Author: henrikvalv3

places_insights/notebooks/sample_data_demo/places_insights_sample_data_demo.ipynb

@@ -41,7 +41,7 @@
     {
       "cell_type": "markdown",
       "source": [
-        "# Geospatial Analysis with Places Insights Sample Data\n",
+        "# Geospatial Analysis with Places Insights Data\n",
         "\n",
         "<table align=\"left\">\n",
         "  <td style=\"text-align: center\">\n",
@@ -162,13 +162,13 @@
       "cell_type": "code",
       "source": [
         "# @title 2. Configuration\n",
-        "# @markdown Select a Sample City to demo. This configures the map center and the target BigQuery dataset.\n",
+        "# @markdown Select a city to demo. This configures the map center and the target BigQuery dataset.\n",
         "\n",
         "# @markdown ### 1. Select Location\n",
         "SAMPLE_LOCATION = \"New York City, USA\" # @param [\"Sydney, Australia\", \"Sao Paulo, Brazil\", \"Toronto, Canada\", \"Paris, France\", \"Berlin, Germany\", \"Mumbai, India\", \"Jakarta, Indonesia\", \"Rome, Italy\", \"Tokyo, Japan\", \"Mexico City, Mexico\", \"Madrid, Spain\", \"Zurich, Switzerland\", \"London, UK\", \"New York City, USA\"]\n",
         "\n",
         "# @markdown ### 2. Select Data Source\n",
-        "# @markdown Choose **Sample Data** for evaluation (requires [\"Sample\" subscription](https://developers.google.com/maps/documentation/placesinsights/cloud-setup#sample_data)) or **Full Data** for production (requires [\"Full\" subscription](https://developers.google.com/maps/documentation/placesinsights/cloud-setup#full_data)).\n",
+        "# @markdown Choose **Sample Data** (requires [\"Sample\" subscription](https://developers.google.com/maps/documentation/placesinsights/cloud-setup#sample_data)) or **Full Data** (requires [\"Full\" subscription](https://developers.google.com/maps/documentation/placesinsights/cloud-setup#full_data)).\n",
         "DATASET_MODE = \"Sample Data\" # @param [\"Sample Data\", \"Full Data\"]\n",
         "\n",
         "# @markdown ### 3. Custom Override (Optional)\n",