Update component extends

Author: zspitzer

docs/03.reference/02.tags/component/_attributes/extends.md

@@ -1 +1,12 @@
-Name of parent component from which to inherit methods and properties.
+Name of parent Component from which to inherit Methods and Properties.
+
+- A component in the same folder: `roles`
+- Relative to the current folder, in a sub directory: `admin.roles`
+- Using a mapping or relative to webroot, using dotted paths: `models.admin.roles`
+- Absolute path using a mapping: `myapp.models.admin.roles` (where `myapp` is a defined mapping)
+
+The `.cfc` extension is implicit and should not be included.
+
+Paths use dot notation, not slashes.
+
+Component paths are case-insensitive in CFML.