[Tech Debt] Fix file download tests for casing changes in 8.4

Author: levinmr

features/autotracker_download.feature

@@ -8,16 +8,16 @@ Feature: Downloads are reported to DAP when autotracking is enabled
     Given DAP is configured with autotracking enabled
     When I load the test site
     And I click on a file to download it
-    Then the file download is reported to DAP with interaction type "mouse click"
+    Then the file download is reported to DAP with interaction type "Mouse Click"
 
   Scenario: User presses Enter to download file with autotracker on
     Given DAP is configured with autotracking enabled
     When I load the test site
     And I highlight and press Enter on a file to download it
-    Then the file download is reported to DAP with interaction type "enter key keystroke"
+    Then the file download is reported to DAP with interaction type "Enter Key Keystroke"
 
   Scenario: User clicks to download file with autotracker off
     Given DAP is configured with autotracking disabled
     When I load the test site
     And I click on a file to download it
-    Then the file download is not reported to DAP
+    Then the file download is not reported to DAP

features/support/step_definitions/dataLayer_steps.js

@@ -26,7 +26,7 @@ Then("the file download is reported to DAP with interaction type {string}", asyn
         "file_extension": "zip",
         "file_name": "/about.zip",
         "link_domain": "localhost",
-        "link_id": "internaldownload",
+        "link_id": "internalDownload",
         "link_text": "/about.zip",
         "link_url": "http://localhost:8080/about.zip",
       }
@@ -39,4 +39,4 @@ Then("the file download is not reported to DAP", async function () {
     return window.dataLayer.find(item => item[0] === 'event' && item[1] === 'file_download');
   });
   expect(event).to.be.undefined;
-});
+});