docs: replace aliased email with normal email

Author: byCedric

action.yml

@@ -1,6 +1,6 @@
 ---
 name: Expo GitHub Action
-author: Cedric van Putten <me+expo-action@bycedric.com>
+author: Cedric van Putten <me@bycedric.com>
 description: Use Expo CLI in your GitHub Actions workflow.
 branding:
   icon: terminal

base/2/Dockerfile

@@ -3,7 +3,7 @@ FROM node:10
 LABEL name="Expo for Docker"
 LABEL repository="https://github.com/expo/expo-github-action"
 LABEL homepage="https://github.com/expo/expo-github-action/blob/master/base"
-LABEL maintainer="Cedric van Putten <me+expo-action@bycedric.com>"
+LABEL maintainer="Cedric van Putten <me@bycedric.com>"
 
 RUN yarn global add expo-cli@2 \
 	&& yarn cache clean

base/3/Dockerfile

@@ -3,7 +3,7 @@ FROM node:12
 LABEL name="Expo for Docker"
 LABEL repository="https://github.com/expo/expo-github-action"
 LABEL homepage="https://github.com/expo/expo-github-action/blob/master/base"
-LABEL maintainer="Cedric van Putten <me+expo-action@bycedric.com>"
+LABEL maintainer="Cedric van Putten <me@bycedric.com>"
 
 RUN yarn global add expo-cli@3 \
 	&& yarn cache clean