fix typo

nekketsuuu · nekketsuuu · commit bb50aa6be64c · 2019-02-06T15:25:48.000+09:00
diff --git a/tools.go b/tools.go
@@ -3,5 +3,5 @@
 package tools
 
 import (
-	_ "golang.org/x/tools/cmd/gocode"
+	_ "golang.org/x/tools/cmd/goyacc"
 )
