chore(typo): fix grammar in comments, API docs and error messages (#38370)

services/migrations/dump.go

@@ -49,7 +49,7 @@ type RepositoryDumper struct {
 	prHeadCache map[string]string
 }
 
-// NewRepositoryDumper creates an gitea Uploader
+// NewRepositoryDumper creates a gitea Uploader
 func NewRepositoryDumper(ctx context.Context, baseDir, repoOwner, repoName string, opts base.MigrateOptions) (*RepositoryDumper, error) {
 	baseDir = filepath.Join(baseDir, repoOwner, repoName)
 	if err := os.MkdirAll(baseDir, os.ModePerm); err != nil {

services/migrations/gitea_uploader.go

@@ -56,7 +56,7 @@ type GiteaLocalUploader struct {
 	gitServiceType structs.GitServiceType
 }
 
-// NewGiteaLocalUploader creates an gitea Uploader via gitea API v1
+// NewGiteaLocalUploader creates a gitea Uploader via gitea API v1
 func NewGiteaLocalUploader(_ context.Context, doer *user_model.User, repoOwner, repoName string) *GiteaLocalUploader {
 	return &GiteaLocalUploader{
 		doer:        doer,