DOC-655: switch from master to main branch (#1765)

* DOC-655: switch from master to main branch

* DOC-655: update werker configuration

README.md

@@ -1,6 +1,6 @@
 # TinyMCE documentation
 
-[![wercker status](https://app.wercker.com/status/4d4c743635332430f9d25acae1be5218/s/master "wercker status")](https://app.wercker.com/project/bykey/4d4c743635332430f9d25acae1be5218)
+[![wercker status](https://app.wercker.com/status/4d4c743635332430f9d25acae1be5218/s/main "wercker status")](https://app.wercker.com/project/bykey/4d4c743635332430f9d25acae1be5218)
 
 This project maintains the documentation for TinyMCE at
 [https://www.tiny.cloud/docs](https://www.tiny.cloud/docs). If you have any

_includes/configuration/valid-elements.md

@@ -3,7 +3,7 @@
 
 The valid_elements option defines which elements will remain in the edited text when the editor saves. You can use this to limit the returned HTML to a subset.
 
-This option contains a comma separated list of element conversion chunks. Each chunk contains information about how one element and its attributes should be treated. The default rule set for this option is a mixture of the full [HTML5](http://www.w3.org/html/wg/drafts/html/master/) and [HTML4](http://www.w3.org/TR/REC-html40/) specification or the HTML5 or HTML4 specification depending on the configured [schema]({{ site.baseurl }}/configure/content-filtering/#schema).
+This option contains a comma separated list of element conversion chunks. Each chunk contains information about how one element and its attributes should be treated. The default rule set for this option is a mixture of the full [HTML5](https://html.spec.whatwg.org/) and [HTML4](http://www.w3.org/TR/REC-html40/) specification or the HTML5 or HTML4 specification depending on the configured [schema]({{ site.baseurl }}/configure/content-filtering/#schema).
 
 If you just want to add or change some behavior for a few items, use the [extended_valid_elements]({{ site.baseurl }}/configure/content-filtering/#extended_valid_elements) option
 

_includes/feedback.html

@@ -9,7 +9,7 @@
     Well, that's awkward <i class="em em-sweat_smile"></i>. Would you mind
     <a class="link-burrito" data-action="feedback-open-issue" href="https://github.com/tinymce/tinymce-docs/issues/new?body=%0A%0A%0A{{ issue_body | url_encode }}&title={{ issue_title | url_encode }}" target="_blank">opening an issue</a>
     or
-    <a class="link-burrito" data-action="feedback-edit" href="https://github.com/tinymce/tinymce-docs/tree/master/{{ page.path }}" target="_blank">helping us out</a>?
+    <a class="link-burrito" data-action="feedback-edit" href="https://github.com/tinymce/tinymce-docs/tree/main/{{ page.path }}" target="_blank">helping us out</a>?
   </p>
   <p class="feedback-yes">
     Thanks for the feedback!

_includes/live-demos/premiumskinsandicons-bootstrap/style.css

@@ -22,7 +22,7 @@
  * Bootstrap v4.3.1 (https://getbootstrap.com/)
  * Copyright 2011-2019 The Bootstrap Authors
  * Copyright 2011-2019 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
+ * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
  */
 
 .dcs *,

_includes/template/bodycontents.html

@@ -184,7 +184,7 @@
             <!-- Disabled since there is no git link -->
             {% else %}
             <a class="contribute link-garlic"
-               href="https://github.com/tinymce/tinymce-docs/tree/master/{{ page.path }}">Contribute to this page<i></i></a>
+               href="https://github.com/tinymce/tinymce-docs/tree/main/{{ page.path }}">Contribute to this page<i></i></a>
             {% endif %}
             {% if page.controls %}
             {% assign controls = page.controls | split:',' %}

wercker.yml

@@ -1,4 +1,8 @@
-box: jointiny/tiny-cloud-docs-build:latest
+box:
+  id: jointiny/tiny-cloud-docs-build
+  username: $DOCKER_USER
+  password: $DOCKER_PASSWORD
+  tag: latest
 no-response-timeout: 30
 
 build: