Update signatures.md

Adding in Chuck's Luck

content/posts/signatures.md

@@ -143,6 +143,7 @@ draft: false
 - Vince van Oosten ([@techhazard](https://github.com/techhazard/))
 - nyawox ([@nyawox](https://github.com/nyawox))
 - Nina ([@faeranne](https://github.com/faeranne))
+- Chuck N. ([@chuckn408](https://github.com/chuckn408))
 <!-- Insert your signature above here, using the format above.>
 
 ... and at least a dozen others who concur with this document, but are unable to sign for safety reasons.