Fix links to moved sections of the developer guide

CONTRIBUTING.rst

@@ -150,9 +150,9 @@ Areas of particular concern with their own detailed guidelines are:
   around the world.
 
 
-.. _Accessibility: http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/accessibility.html
+.. _Accessibility: http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/conventions/accessibility.html
 .. _website accessibility policy: https://www.edx.org/accessibility
-.. _Internationalization: http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/internationalization/index.html
+.. _Internationalization: http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/conventions/internationalization/index.html
 
 
 Step 4: Approval by Community Manager and Product Owner

common/lib/xmodule/xmodule/templates/problem/jsinput_response.yaml

@@ -64,4 +64,4 @@ data: |
           html_file="https://studio.edx.org/c4x/edX/DemoX/asset/webGLDemo.html"
           sop="false"/>
       </customresponse>
-      </problem>
\ No newline at end of file
+      </problem>

lms/envs/common.py

@@ -940,7 +940,7 @@ LOCALE_PATHS = (REPO_ROOT + '/conf/locale',)  # edx-platform/conf/locale/
 MESSAGE_STORAGE = 'django.contrib.messages.storage.session.SessionStorage'
 
 # Guidelines for translators
-TRANSLATORS_GUIDE = 'http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/internationalization/i18n_translators_guide.html'  # pylint: disable=line-too-long
+TRANSLATORS_GUIDE = 'http://edx.readthedocs.org/projects/edx-developer-guide/en/latest/conventions/internationalization/i18n_translators_guide.html'  # pylint: disable=line-too-long
 
 #################################### GITHUB #######################################
 # gitreload is used in LMS-workflow to pull content from github