[excel] (Samples) Fix type mismatch in record daily changes sample (#710)

* Update issue templates

* Add template for page controls

* Update docfx to point at new template

* Fix type mismatch in record daily changes sample

* Remove extra comma

* Remove accidental files

Author: AlexJerabek

docs/resources/samples/report-day-to-day-changes.md

@@ -33,12 +33,12 @@ function main(workbook: ExcelScript.Workbook, newData: string): string {
   // Add a row with the date, new value, and a formula calculating the difference.
   const currentDate = new Date(Date.now()).toLocaleDateString();
   const newRow = [currentDate, newData, "=[@Reading]-OFFSET([@Reading],-1,0)"];
-  table.addRow(-1, newRow,);
+  table.addRow(-1, newRow);
 
   // Return the difference between the newData and the previous entry.
   const difference = Number.parseFloat(newData) - previousValue;
   console.log(difference);
-  return difference;
+  return difference.toString();
 }
 ```