message: Fix link to recast section
diff: @@ -11,7 +11,7 @@ Currently the following types of middleware are available for Botkit:
  * [Microsoft Luis](#microsoft-luis)
  * [Api.ai](#apiai)
  * [IBM Watson](#ibm-watson)
  -* [Recast.ai](#recast-ai)
  +* [Recast.ai](#recastai)
  ### [Storage Modules](#storage-modules)
  