Update labels

Author: crazy-max

.github/labels.yml

@@ -1,4 +1,8 @@
 ## more info https://github.com/crazy-max/ghaction-github-labeler
+- # automerge
+  name: ":bell: automerge"
+  color: "8f4fbc"
+  description: ""
 - # bot
   name: ":robot: bot"
   color: "69cde9"
@@ -47,9 +51,9 @@
   name: ":no_entry_sign: invalid"
   color: "e6e6e6"
   description: ""
-- # maybe bug
-  name: ":interrobang: maybe bug"
-  color: "ff5722"
+- # investigate
+  name: ":mag: investigate"
+  color: "e6625b"
   description: ""
 - # needs more info
   name: ":thinking: needs more info"

README.md

@@ -40,7 +40,7 @@ ___
 * [msmtpd SMTP relay](https://github.com/crazy-max/docker-msmtpd) image to send emails
 * [Traefik](https://github.com/containous/traefik-library-image) as reverse proxy and creation/renewal of Let's Encrypt certificates (see [this template](examples/traefik))
 
-### Build locally
+## Build locally
 
 ```shell
 git clone https://github.com/crazy-max/docker-dokuwiki.git