Books: fix bold
diff --git a/Books.md b/Books.md
index baccf70..afb3332 100644
--- a/Books.md
+++ b/Books.md
@@ -238,17 +238,17 @@
* **Aprende Go en Y minutos**
* Author: Nacho Pacheco
* Publication Date: 2015-02-24
- * ISBN: ****
+ * ISBN: ---
* Reference: https://www.gitbook.com/book/nachopacheco/aprende-go-en-y-minutos/
- * *Construyendo aplicaciones Web con Go***
+ * **Construyendo aplicaciones Web con Go**
* Author: Nacho Pacheco
* Publication Date: 2015-02-18
- * ISBN: ****
+ * ISBN: ---
* Reference: https://www.gitbook.com/book/nachopacheco/cawg/
* **¡Go en Espalol!**
* Author: Nacho Pacheco
* Publication Date: 2015-03-22
- * ISBN: ****
- * Reference: https://www.gitbook.com/book/nachopacheco/go-es/
+ * ISBN: ---
+ * Reference: https://www.gitbook.com/book/nachopacheco/go-es/
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