Update test.firestore.js

Add missing START/END for ends_with

Author: markarndt

firestore-next/test.firestore.js

@@ -2306,13 +2306,15 @@ describe("firestore-pipelines", () => {
     }
 
     async function endsWithFunction() {
+        // [START ends_with]
         const result = await execute(db.pipeline()
           .collection("inventory/devices/laptops")
           .select(
             field("name").endsWith("16 inch")
               .as("16InLaptops")
           )
         );
+        // [END ends_with]
         console.log(result);
     }
 
@@ -2598,4 +2600,4 @@ describe("firestore-pipelines", () => {
         // [END vector_length]
         console.log(result);
     }
-});
+});