Update SUMMARY.md

SUMMARY.md

@@ -19,7 +19,7 @@
     * [End of initialization](Initialization/linux-initialization-10.md)
 * [Interrupts](interrupts/README.md)
     * [Introduction](interrupts/interrupts-1.md)
-    * [Start to dive into interrupts]()
+    * [Start to dive into interrupts](interrupts/interrupts-2.md)
 * [Memory management](mm/README.md)
     * [Memblock](mm/linux-mm-1.md)
     * [Fixmaps and ioremap](mm/linux-mm-2.md)