chore: add refs link

pnlinh · pnlinh · commit 96f1c1b888c1 · 2022-11-28T15:36:44.000+07:00
diff --git a/README.md b/README.md
@@ -67,3 +67,4 @@ networks:
 ### References
 
 - https://github.com/TrafeX/docker-php-nginx
+- https://bolshov.online/docker/2020/11/18/runit-vs-supervisor

Original file line number	Diff line number	Diff line change
`@@ -67,3 +67,4 @@ networks:`
`67`	`67`	`### References`
`68`	`68`
`69`	`69`	`- https://github.com/TrafeX/docker-php-nginx`
	`70`	`+- https://bolshov.online/docker/2020/11/18/runit-vs-supervisor`