[#47] fixed some doc and code inconsistencies and removed some redundant parentheses

tools/auth/auth.go

@@ -29,7 +29,7 @@ type Provider interface {
 	// SetClientId sets the provider client's ID.
 	SetClientId(clientId string)
 
-	// ClientId returns the provider client's app secret.
+	// ClientSecret returns the provider client's app secret.
 	ClientSecret() string
 
 	// SetClientSecret sets the provider client's app secret.

tools/list/list.go

@@ -10,7 +10,7 @@ import (
 
 var cachedPatterns = map[string]*regexp.Regexp{}
 
-// ExustInSlice checks whether a comparable element exists in a slice of the same type.
+// ExistInSlice checks whether a comparable element exists in a slice of the same type.
 func ExistInSlice[T comparable](item T, list []T) bool {
 	if len(list) == 0 {
 		return false