update markdown text to match statements

Author: jyaistMap

guide/04-feature-data-and-analysis/summarizing-feature-data.ipynb

@@ -728,7 +728,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Let's narrow this data down further to only those states that have had more than 65 earthquakes over this 13 year period:"
+    "Let's narrow this data down further to only those states that have had more than 25 earthquakes over the span of this data (1900 - 2023)"
    ]
   },
   {
@@ -764,7 +764,7 @@
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "Thus, from our data over the past 13 years, only 15 of the 50 US States have had more than 25 earthquakes. Let us plot a bar chart to view which states had the most earthquakes"
+    "Thus, over the time span of this data, only 15 of the 50 US States have had more than 25 earthquakes. Let us plot a bar chart to view which states had the most earthquakes"
    ]
   },
   {