refactor(core) rephrase error messages

Fixes typo, clarifies what actions are expected.

Author: Y0hy0h

packages/core/errors/messages.ts

@@ -10,21 +10,21 @@ export const UnknownDependenciesMessage = (
   args[index] = '?';
   message += args.join(', ');
 
-  message += `). Please verify whether [${index}] argument is available in the current context.`;
+  message += `). Please make sure that the argument at index [${index}] is available in the current context.`;
   return message;
 };
 
 export const InvalidMiddlewareMessage = (name: string) =>
   `The middleware doesn't provide the 'resolve' method (${name})`;
 
 export const InvalidModuleMessage = (scope: string) =>
-  `Nest cannot create the module instance. The frequent reason of this exception is the circular dependency between modules. Use forwardRef() to avoid it (read more https://docs.nestjs.com/advanced/circular-dependency). Scope [${scope}]`;
+  `Nest cannot create the module instance. Often, this is because of a circular dependency between modules. Use forwardRef() to avoid it. (Read more https://docs.nestjs.com/advanced/circular-dependency.) Scope [${scope}]`;
 
 export const UnknownExportMessage = (module: string) =>
-  `Nest cannot export component/module that is not a part of the currently proccessed module (${module}). Please verify whether each exported unit is available in this particular context.`;
+  `Nest cannot export a component/module that is not a part of the currently processed module (${module}). Please verify whether each exported unit is available in this particular context.`;
 
 export const INVALID_MIDDLEWARE_CONFIGURATION = `Invalid middleware configuration passed inside the module 'configure()' method.`;
 export const UNKNOWN_REQUEST_MAPPING = `Request mapping properties not defined in the @RequestMapping() annotation!`;
 export const UNHANDLED_RUNTIME_EXCEPTION = `Unhandled Runtime Exception.`;
 export const INVALID_EXCEPTION_FILTER = `Invalid exception filters (@UseFilters()).`;
-export const MICROSERVICES_PACKAGE_NOT_FOUND_EXCEPTION = `Unable to load @nestjs/microservices package (please, make sure whether it's installed already).`;
+export const MICROSERVICES_PACKAGE_NOT_FOUND_EXCEPTION = `Unable to load @nestjs/microservices package. (Please make sure that it's already installed.)`;