[doc] Improve instructions on how to re-generate the js SQL parser
@@ -1030,7 +1030,15 @@ make css
### SQL Autocomplete
-Install jison from branch https://github.com/JohanAhlen/jison and run "npm install -g". Then:
+Install a patched jison:
+
+```
+git clone https://github.com/JohanAhlen/jison
+cd jison
+npm install -g .
+```
+
+Then run:
```
make sql-all-parsers
