fixup! Bug 31286: Implementation of bridge, proxy, and firewall settings in...

fixup! Bug 31286: Implementation of bridge, proxy, and firewall settings in about:preferences#connection

Bug 42665: Drop the "tail-with-learn-more" class from our descriptions.

browser/components/torpreferences/content/connectionPane.xhtml

@@ -13,10 +13,7 @@
   >
     <html:h1 data-l10n-id="tor-connection-settings-heading"></html:h1>
     <description class="description-deemphasized" flex="1">
-      <html:span
-        data-l10n-id="tor-connection-overview"
-        class="tail-with-learn-more"
-      ></html:span>
+      <html:span data-l10n-id="tor-connection-overview"></html:span>
       <label
         class="learnMore text-link"
         is="text-link"
@@ -112,10 +109,7 @@
     hidden="true"
   >
     <description class="description-deemphasized" flex="1">
-      <html:span
-        class="tail-with-learn-more"
-        data-l10n-id="tor-bridges-overview"
-      />
+      <html:span data-l10n-id="tor-bridges-overview"></html:span>
       <label
         class="learnMore text-link"
         is="text-link"

browser/components/torpreferences/content/provideBridgeDialog.xhtml

@@ -30,7 +30,6 @@
     <html:div id="user-provide-bridge-entry-page">
       <description id="user-provide-bridge-description">
         <html:span
-          class="tail-with-learn-more"
           data-l10n-id="user-provide-bridge-dialog-description"
         ></html:span>
         <label