Fix MD031 Fenced code blocks should be surrounded by blank lines across multiple markdown files

CUSTOMIZE_EN.md

@@ -68,6 +68,7 @@ In order to make changes to any CSS selector (custom style sheets), you can add
   background: red;
 }
 ```
+
 If you want to change any [foundation](http://foundation.zurb.com/) variable, you can do it at the `app/assets/stylesheets/_custom_settings.scss` file. For example to change the main application color just add:
 
 ```css

CUSTOMIZE_ES.md

@@ -68,6 +68,7 @@ Si quieres cambiar algun selector CSS (de las hojas de estilo) puedes hacerlo en
   background: red;
 }
 ```
+
 Si quieres cambiar alguna variable de [foundation](http://foundation.zurb.com/) puedes hacerlo en el fichero `app/assets/stylesheets/_custom_settings.scss`. Por ejemplo para cambiar el color general de la aplicación puedes hacerlo agregando:
 
 ```css

README.md

@@ -45,6 +45,7 @@ RAILS_ENV=test rake db:setup
 ```
 
 Run the app locally:
+
 ```
 bin/rails s
 

README_ES.md

@@ -45,6 +45,7 @@ RAILS_ENV=test rake db:setup
 ```
 
 Para ejecutar la aplicación en local:
+
 ```
 bin/rails s
 ```

doc/en/dev_test_setup_linux.md

@@ -21,6 +21,7 @@ The preferred method is via rvm:
 ```
 curl -L https://get.rvm.io | bash -s stable
 ```
+
 ### For all system users
 
 ```
@@ -102,6 +103,7 @@ bundle install
 cp config/database.yml.example config/database.yml
 cp config/secrets.yml.example config/secrets.yml
 ```
+
 Perhaps it's needed to create a superuser rol with password in postgresql, and write it in */config/database.yml* 'user:' and 'password:' fields.
 
 Also, it seems that postgresql use as default an unix socket for localhost communications. If we encounter problems creating database (connection problems) we can change in */config/database.yml* the line:

doc/es/dev_test_setup_linux.md

@@ -21,6 +21,7 @@ El método recomendado es via rvm:
 ```
 curl -L https://get.rvm.io | bash -s stable
 ```
+
 ### Para todos los usuarios del sistema:
 
 ```