* Embeddings example: set EmbeddingMode true

prevents an exception from being thrown when GetEmbeddings() is called

* Embeddings example: improve documentation and styling

* docs: improve GetEmbeddings page

If EmbeddingMode is not set to true, GetEmbeddings() throws an exception

* docs: improve GetEmbeddings page

The previous commit 6c9ff3158c was inaccurate

* Embeddings example: improve styling

displays the example description after the model is loaded to ensure the text is on the screen at the time the prompt is first requested

This results in windows users not needing to rename the DLL. This allows native llama builds to be dropped in, even on windows.

I also took the time to update the documentation, removing references to renaming the files, since the names now match.

Fixes #463