Merge pull request #1149 from JonSonesen/jonathonsonesen-1148

fixes issue #1148

seed/field-guides.json

@@ -959,7 +959,7 @@
       "    <li class='large-li'>Zipline: Wikipedia Viewer</li>",
       "  </ol>",
       "  <p class='large-p'>This won't be a new curriculum - it will just the first 200 hours of our full stack JavaScript curriculum.</p>",
-      "  <p class='large-p'>All campers who have already completed these challenges are retroactively be eligible for the certificate!</p>",
+      "  <p class='large-p'>All campers who have already completed these challenges are retroactively eligible for the certificate!</p>",
       "</div>"
     ]
   }