Add note on resources

Author: zlovatt

docs/introduction/resources.md

@@ -1,5 +1,8 @@
 # Resources
 
+!!! note
+    Have suggestions for new resources to add here? Please [reach out](mailto:hi@docsforadobe.dev)! Happy to add your site, book, training channel, etc.
+
 Dan Ebberts provides example expressions and tutorials for learning how to work with expressions on his [MotionScript website](https://www.motionscript.com). For example, Dan provides an excellent [page about collision detection](http://www.motionscript.com/design-guide/collision.html).
 
 The AE Enhancers forum provides many examples and much useful information about expressions, as well as scripts and animation presets. In [this post on the AE Enhancers forum](https://aenhancers.com/viewtopic.php?t=630), Paul Tuersley provides a tutorial and example project that show how to use expressions to animate several layers in a swarm.