advanced.md in octocatalog-diff-1.1.0

- old
+ new

@@ -22,9 +22,10 @@
 - [Overriding facts](/doc/advanced-override-facts.md)
 - [Puppet Enterprise node classification service](/doc/advanced-pe-enc.md)
 - [Using `octocatalog-diff` without git](/doc/advanced-using-without-git.md)
 - [Catalog validation](/doc/advanced-catalog-validation.md)
 - [Environment setup](/doc/advanced-environments.md)
+- [Overriding built-in octocatalog-diff scripts](/doc/advanced-script-override.md)
 
 ### Controlling output
 
 - [Ignoring certain changes via command line options](/doc/advanced-ignores.md)
 - [Additional output filters](/doc/advanced-filter.md)