Merge pull request #57 from fastai/dependabot/bundler/docs/rexml-3.2.5

Bump rexml from 3.2.4 to 3.2.5 in /docs

Author: jph00

docs/Gemfile.lock

@@ -54,7 +54,7 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.4)
+    rexml (3.2.5)
     rouge (3.25.0)
     safe_yaml (1.0.5)
     sass (3.7.4)