fix: correct all the spelling typos (#3960)

* Improve code health
Fix TS typos in local variables
Fix CSS typos in local styles
Fix typos in comments
Fix typos in strings

* Fix order of n8n setup sections in CONTRIBUTING.md

packages/cli/src/Interfaces.ts

@@ -216,7 +216,7 @@ export interface IExecutionResponse extends IExecutionBase {
 	workflowData: IWorkflowBase;
 }
 
-// Flatted data to save memory when saving in database or transfering
+// Flatted data to save memory when saving in database or transferring
 // via REST API
 export interface IExecutionFlatted extends IExecutionBase {
 	data: string;