Update README.md - minor typos (ardalis#947)

Author: codemonkey85

README.md

@@ -60,7 +60,7 @@ Or if you're feeling really generous, we now support GitHub sponsorships - see t
 
 ## Sponsors
 
-I'm please to announce that [Amazon AWS's FOSS fund](https://github.com/aws/dotnet-foss) has chosen to award a 12-month sponsorship to this project. Thank you, and thanks to all of my other past and current sponsors!
+I'm pleased to announce that [Amazon AWS's FOSS fund](https://github.com/aws/dotnet-foss) has chosen to award a 12-month sponsorship to this project. Thank you, and thanks to all of my other past and current sponsors!
 
 ## Troubleshooting Chrome Errors
 
@@ -251,7 +251,7 @@ The use cases / application project includes the set of all commands and queries
 
 The Web project includes all API endpoints, which include their own request and response types, following the [REPR pattern](https://deviq.com/design-patterns/repr-design-pattern). The FastEndpoints library includes built-in support for validation using FluentValidation on the request types. This is a natural place to perform input validation as well.
 
-Having validation occur both within the API endpoints and then again at the use case level may be considered redundant. There are tradeoffs to adding essentially the same validation in two places, one for API requests and another for messages sent to Use Case handlers. Following defensive coding, it often makes sense to add validation in both places, as the overhead is minimal and the peace of mind of mind and greater application robustness is often worth it.
+Having validation occur both within the API endpoints and then again at the use case level may be considered redundant. There are tradeoffs to adding essentially the same validation in two places, one for API requests and another for messages sent to Use Case handlers. Following defensive coding, it often makes sense to add validation in both places, as the overhead is minimal and the peace of mind and greater application robustness is often worth it.
 
 ## The Core Project