Missing "otherwise" in `hash_append` reference docs

In [this](https://pdimov.github.io/hash2/doc/html/hash2.html#ref_hash_append_hash_append) section, each item in Effects seems to be an alternative rather than a step in the sequence. I think, in such cases each item should end with "; otherwise". Or better yet, the Effects should start with a preamble like "Performs one of the following actions".