Edit DSLX reference: * Fix type alias syntax. * Update bit casting syntax. Provide more examples. * Misc. edits.
Edit DSLX reference:
* Fix type alias syntax.
* Update bit casting syntax. Provide more examples.
* Misc. edits.

PiperOrigin-RevId: 341699270

google/xls,google/xls,google/xls,google/xls,google/xls,google/xls