acme/autocert: fix typo in Cache doc comment
@@ -27,7 +27,7 @@ type Cache interface {
Get(ctx context.Context, key string) ([]byte, error)
// Put stores the data in the cache under the specified key.
- // Inderlying implementations may use any data storage format,
+ // Underlying implementations may use any data storage format,
// as long as the reverse operation, Get, results in the original data.
Put(ctx context.Context, key string, data []byte) error
