Merge pull request reduxjs#1283 from grifotv/patch-1

Point link to Glossary markdown instead of html

docs/recipes/ReducingBoilerplate.md

@@ -154,7 +154,7 @@ There are also utility libraries to aid in generating action creators, such as [
 
 ## Async Action Creators
 
-[Middleware](../Glossary.html#middleware) lets you inject custom logic that interprets every action object before it is dispatched. Async actions are the most common use case for middleware.
+[Middleware](../Glossary.md#middleware) lets you inject custom logic that interprets every action object before it is dispatched. Async actions are the most common use case for middleware.
 
 Without any middleware, [`dispatch`](../api/Store.md#dispatch) only accepts a plain object, so we have to perform AJAX calls inside our components: