Fix doc typo

Signed-off-by: Jeremiah Boyle <[email protected]>

Author: j3r3miah

doc/go-target.md

@@ -84,7 +84,7 @@ And the `generate.sh` file will look similar to this:
 
 	#!/bin/sh
 
-	alias antlr4='java -Xmx500M -cp "./antlr4-4.11.0-complete.jar:$CLASSPATH" org.antlr.v4.Tool'
+	alias antlr4='java -Xmx500M -cp "./antlr-4.11.1-complete.jar:$CLASSPATH" org.antlr.v4.Tool'
 	antlr4 -Dlanguage=Go -no-visitor -package parser *.g4
 ```