Update docs to refer to ESR 102, and regenerate bytecodes doc

This is the last step before making esr102 the default branch in the repo.

Author: ptomato

README.md

@@ -3,7 +3,7 @@
 This repository contains documentation and examples for people who want
 to embed the SpiderMonkey JavaScript engine.
 
-The information on this `esr91` branch applies to SpiderMonkey 91.x, an
+The information on this `esr102` branch applies to SpiderMonkey 102.x, an
 Extended Support Release (ESR).
 For other versions of SpiderMonkey, check the other branches: `next` for
 information that will apply in the next as-yet-unreleased ESR, or