Merge pull request #1447 from Laro88/patch-1

Fix: 'synonymous' typo

docs/index.md

@@ -137,7 +137,7 @@ calling `next()`. Calling `next()` will move to the next function in the chain.
 
 Unlike other REST frameworks, calling `res.send()` does not trigger `next()`
 automatically. In many applications, work can continue to happen after
-`res.send()`, so flushing the response is not synonmyous with completion of a
+`res.send()`, so flushing the response is not synonymous with completion of a
 request.
 
 In the normal case, `next()` does not typically take any parameters. If for