fix: adds encodingType to analyzeSyntax* sampless (#364)
fix: adds encodingType to analyzeSyntax* sampless (#364)

This adds the encodingType field to requests to the analyze-syntax method of the Natural Language API.

The pull request updates the following region tags:

language_syntax_gcs
language_syntax_text

googleapis/google-cloud-node,googleapis/google-cloud-node,googleapis/google-cloud-node,googleapis/google-cloud-node