Correct spelling (#36783)

I was testing typos-cli and fixed some misspelled wording here.
All changes are internal — no public API fields, database columns,
locale keys, or migration names are affected.

services/packages/container/blob_uploader.go

@@ -18,8 +18,8 @@ import (
 var (
 	// errWriteAfterRead occurs if Write is called after a read operation
 	errWriteAfterRead = errors.New("write is unsupported after a read operation")
-	// errOffsetMissmatch occurs if the file offset is different than the model
-	errOffsetMissmatch = errors.New("offset mismatch between file and model")
+	// errOffsetMismatch occurs if the file offset is different than the model
+	errOffsetMismatch = errors.New("offset mismatch between file and model")
 )
 
 // BlobUploader handles chunked blob uploads
@@ -86,7 +86,7 @@ func (u *BlobUploader) Append(ctx context.Context, r io.Reader) error {
 		return err
 	}
 	if offset != u.BytesReceived {
-		return errOffsetMissmatch
+		return errOffsetMismatch
 	}
 
 	n, err := io.Copy(io.MultiWriter(u.file, u.MultiHasher), r)