Update source locale to Transifex formatting.

src/_locales/en_US/messages.json

@@ -55,6 +55,10 @@
         "message": "Learn more",
         "description": ""
     },
+    "extension_error_text": {
+        "message": "Please <a href='https://www.eff.org/privacybadger#faq-I-found-a-bug!-What-do-I-do-now?' target='_blank'>tell us</a> about the following error:",
+        "description": "Shown in the popup when there is a problem with the user's Privacy Badger extension that we want to encourage the user to tell us about."
+    },
     "data_settings": {
         "message": "Manage Data",
         "description": "This is an options page tab heading."
@@ -67,10 +71,6 @@
         "message": "Report an Error",
         "description": ""
     },
-    "extension_error_text": {
-        "message": "Please <a href='https://www.eff.org/privacybadger#faq-I-found-a-bug!-What-do-I-do-now?' target='_blank'>tell us</a> about the following error:",
-        "description": "Shown in the popup when there is a problem with the user's Privacy Badger extension that we want to encourage the user to tell us about."
-    },
     "whitelist_form_domain_input_placeholder": {
         "message": "e.g. www.domain.com, *.domain.net, domain.org",
         "description": "Placeholder text for the Add domain input under the Whitelisted Domains tab on the options page."