Add refs to updated articles

Author: sofietoft

15/umbraco-cms/SUMMARY.md

@@ -40,6 +40,7 @@
 * [Health Check](extending/health-check/README.md)
   * [Health Check Guides](extending/health-check/guides/README.md)
     * [Content Content Security Policy (CSP)](extending/health-check/guides/contentsecuritypolicy.md)
+* [Creating a Custom Database Table](extending/database.md)
 
 ## Reference
 
@@ -73,6 +74,7 @@
   * [Type finder settings](reference/configuration/typefindersettings.md)
   * [Unattended](reference/configuration/unattendedsettings.md)
   * [Web routing](reference/configuration/webroutingsettings.md)
+* [Common Pitfalls & Anti-Patterns](reference/common-pitfalls.md)
 
 ## Tutorials
 

15/umbraco-cms/release-candidate-guide.md

@@ -63,3 +63,9 @@ Here is a list of all the articles that are new to this version or have been upd
 ### New articles
 
 * [Tutorial: Extending the Help Menu](tutorials/extending-the-help-menu.md)
+
+### Updated articles
+
+* Changes made based on the removal of the UmbracoAPIController
+  * [Common Pitfalls: Static references to scoped references](reference/common-pitfalls.md#static-references-to-scoped-instances-such-as-umbracohelper)
+  * [Creating a custom database table](extending/database.md)