[ML] Updates Semantic search section (#205)

* Updates Semantic search section

* Update serverless/pages/search-your-data-semantic-search.asciidoc

Co-authored-by: Liam Thompson <[email protected]>

* Update serverless/pages/search-your-data-semantic-search.asciidoc

Co-authored-by: Liam Thompson <[email protected]>

* Updates based on feedback

* Update serverless/pages/search-your-data-semantic-search.asciidoc

Co-authored-by: Liam Thompson <[email protected]>

* Replaces ELSER with model deployment workflow

* Adds Semantic search with ELSER page

---------

Co-authored-by: Liam Thompson <[email protected]>

Author: kosabogi

serverless/images/semantic-options.svg

@@ -40,7 +40,6 @@ include::./pages/search-your-data-the-search-api.asciidoc[leveloffset=+3]
 include::./pages/search-with-synonyms.asciidoc[leveloffset=+3]
 include::./pages/knn-search.asciidoc[leveloffset=+3]
 include::./pages/search-your-data-semantic-search.asciidoc[leveloffset=+3]
-include::./pages/search-your-data-semantic-search-elser.asciidoc[leveloffset=+4]
 
 include::./pages/explore-your-data.asciidoc[leveloffset=+2]