Update SUMMARY.md

SUMMARY.md

@@ -9,9 +9,10 @@
 * [Initialization](Initialization/README.md)
     * [First steps in kernel]()
 * [Theory](Theory/README.md)
-    * [Paging](Theory.Paging.md)
+    * [Paging](Theory/Paging.md)
     * [Elf64](Theory/ELF.md)
 * [Misc]()
+    * [Kernel building and instalation]() 
     * [Write and Submit your first Linux kernel Patch]() 
 * [Useful links](LINKS.md)
 * [Contributors](contributors.md)